The crystal is the heart of the blade.
The heart is the crystal of the Jedi.
The Jedi is the crystal of the Force.
The Force is the blade of the heart.
All are intertwined.
The crystal, the blade, the Jedi.
You are one.

Explanation:

Crystal produces blade of a lightsaber, it makes it alive.
The heart is like a crystal, in that it produces our life.
The Jedi are like the crystal, in that they give life to the Force and its Will.
The Force is like the blade of our hearts, it brings meaning to Jedi's life.
For our hearts are like the crystal, the crystal creates the blade.

Crystal = Heart = Life
Heart = Crystal = Life
Jedi = Crystal = Heart = Life
Life = The Force

Form Zero

"The best blades are kept in their sheaths."

―The anonymous warrior

Form Zero is the basis for instruction of lightsaber combat originally defined by Jedi Master Yoda. The art of Form Zero lies in a lightsaber that has not been ignited. A Jedi cannot protect and serve the galaxy in the Jedi way if he/she does not know when to draw the sword and when to resort to different means of solving a problem. Form Zero, unlike most other forms, does not teach a Jedi how to use a lightsaber, but when to use one. The knowledge, understanding, and wisdom behind the idea of right and wrong encompass that a Jedi who feels the necessity to use Form Zero, the absence of violence, is truly gifted in the ways of the Force. Jedi need to restrain themselves when tempted to use "aggressive negotiations," and instead use another well-developed Jedi skill, such as the Jedi mind trick. This is a form used to arrive at a solution without resorting to violence. Jedi need not to show off and must be polite to avoid fight. The Force must be used to bring harmony rather than fighting, and if needed, fighting should be done using only the Force, trying to immobilize the opponent. If this fails there is another tactic: often the sight of an unignited lightsaber is enough to cause individuals that might be potential enemies to become more cooperative.

THE SEVEN FORMS OF LIGHTSABER COMBAT

The seven forms are not merely swordplay moves: they represent seven different kinds of philosophy. In addition, a lightsaber is not necessary to execute the seven forms: each form can be applied in unarmed combat.

Form I

The Determination Form, or The Way of the Sarlacc: Shii-Cho

"It is simple, and its simplicity is its strength."

―Kreia

Sometimes called the ideal form, Form I uses horizontal side-swipes and parries made with the blade of the lightsaber held upright to push the point of an enemy's blade away during a side-to-side attack. If the attack is a downward slash aimed at the head, Form I simply reverses the motion, with a horizontally-held lightsaber being moved up and down to deflect a blow. All the basic ideals of attack, parry, target zones, and practice drills were created with the Form I style.

Form I is wild, raw, and deadly, requiring much emotional heat; it is effective in situations with multiple opponents.

Notable Form I practitioners: Kit Fisto, Cin Drallig, Obi-Wan Kenobi, Zett Jukassa.

Form II

The Contention Form, or The Way of the Ysalamiri: Makashi

This very elegant, powerful, and requiring extreme precision form relies on parries, thrusts, and small, precise cuts - as opposed to the blocking and slashing of the other forms. The blade manipulation requires much focus, but the results are extremely potent. As ranged weapons such as blasters come into play, the advantages of this form of lightsaber combat become less useful, but it is still potent against multiple opponents.

Form II emphasizes fluid motion and anticipation of a weapon being swung at its target, allowing the Jedi to attack and defend with minimal effort. Although many Jedi historians considered Form II to be the ultimate refinement in lightsaber-to-lightsaber combat, it was dropped in favor of Form III combat when blaster weapons became prevalent in the Galaxy. Makashi practitioners sometimes wield lightsabers with curved hilts for greater range of movement and fluidity.

Notable Form II practitioners: Darth Tyranus (Count Dooku), Jedi Exile.

Form III

The Resilience Form, or The Way of the Mynock: Soresu

Originally, Form III was developed as a counter to blaster weapons used by numerous opponents. The philosophy of Soresu is described as "being within the eye of the storm". Practitioners remain centered in their mindset, never being moved by what is around them as they stay where the outer chaos cannot harm them. But as the storm moves, so does the practitioner move to keep within the eye. Thus, Soresu commands powerful defensive techniques that seem to adapt to almost any circumstance, but at the cost of never reaching past the figurative eye of the storm - they lose attacking power. Many who study this style use it to wear down their opponent by defending a long onslaught with minimal counter-attacking, until their adversary's energy is spent; then an alternate style is often employed. The third form of lightsaber combat utilizes motions that occur very close to the body, in an attempt to achieve near-total protection and expend as little energy as possible while executing moves. Form III stresses quick reflexes and fast positional transition, in order to overcome the rapidity with which a blaster can be fired.

Notable Form III practitioners: Obi-Wan Kenobi, Barriss Offee, Foul Moudama, Luminara Unduli.

Form IV

The Aggression Form, or The Way of the Hawk-Bat: Ataru, Sokan

The practitioners of Form IV make extensive use of acrobatic maneuvers often thought physically impossible without the aid of the Force. It emphasizes acrobatic strength and power in wielding the blade, attributes which were frowned upon by many traditional Jedi knights and Masters. Ataru relies on wide slashes, acrobatic proficiency and an open space for the Jedi to fight. One basis for the acrobatic nature of Ataru is that lightsabers can damage with brushing, light strokes, rather than hard chopping motions. This form is also probably not as effective for prolonged combat, as the nature of Ataru can greatly tax the body. Ataru practitioners are at a great disadvantage if fighting in a small area or with multiple opponents.

Developed by the ancient Jedi knights during the Great Hyperspace War, Sokan combines tactics that allow for evasion and mobility of Form III, with the kinetic motions of Form IV combat. Sokan involves swift strokes of the lightsaber, which are aimed towards the opponent's vital areas, in addition to quick tumbles and movements. Combatants make use of large amounts of terrain, trying to maneuver their opponents into vulnerable areas during the course of battles that involve Sokan techniques. This technique allows for great speed and mobility and leaves no openings in one's defense.

Notable Ataru practitioners: Yoda, Qui-Gon Jinn, Quinlan Vos, Aayla Secura, Zez-Kai Ell, Anakin Skywalker.

Notable Sokan practitioners: Obi-Wan Kenobi, Luke Skywalker.

Form V

The Perseverance Form, or The Way of the Krayt Dragon: Shien, Djem So

Embodying the perfection of the idea of counterattack, Form V maintains its existence through having sufficient defensive skills, as derived from Form V, but channeling defense into offense, using the opponent's attack against them. While Form III combatants effortlessly deflect laser bolts, Form V practitioners excel at redirecting the laser bolt toward the opponent. This simultaneously defends the user and efficiently injures the opponent.

Form V practitioners believe that the best defense is a good offense. It has already been observed that Form III users simply parry lightsaber attacks until the opponent makes a fatal mistake, while Form V practitioners take the near impenetrable defenses of Form III and press the assault, using wide, sweeping blows in an attempt to overwhelm the opponent with brute strength.

Djem So is more lightsaber combat-adapted variant of Shien. Djem So is the creation of a group of Form III masters who felt that Soresu was too passive. It addresses the shortcomings of Form III, in which a Jedi Master may have proved to be undefeatable but was likewise unable to overcome a skilled opponent. Utilizing a combination of blocks and parries, a Djem So user have a proper foundation in terms of defense against both ranged and melee attacks.

Notable Shien practitioners: Cin Drallig, Zez-Kai El, Vrook Lamar, Khaat Qiyn, Anakin Skywalker, Darth Vader.

Notable Djem So practitioners: Anakin Skywalker, Darth Vader, Luke Skywalker, Darth Bane, Aayla Secura, Cin Drallig.

Form VI

The Moderation Form, or the Way of the Rancor: Niman

The basic philosophy of Niman is "the leaf swept in the winds of the Force". One who uses this form attains a mindset of one who is not perturbed by their surroundings, but rides the currents of the surrounding chaos, being harmonious and balanced within. It is a style of balance. The style has a surprisingly low chance of deflecting blaster bolts, lower than any form.

Form VI attempts to balance all elements of lightsaber combat, combining the Forms that came before into a less intensely demanding combat style. The result is that the users' skill in each individual areas of lightsaber combat is only moderate, making Form VI well-suited for diplomats and consulars, as they can spend their time training in the areas of politics, negotiation and Force mastery instead of combat training. It can be affectionately referred to and known as a sort of "Jack of all Trades" form, with mastery of no one aspect of combat, but competency in all.

Notable Form VI practitioners: Zez-Kai ell, Cin Drallig, Vrook Lamar.

Jar'Kai

Jar'Kai is one of the oldest forms of lightsaber combat, a dual blade wielding technique. It was originally derived from Niman, however it includes elements of other Forms such as Ataru, as well as special techniques. Jar'Kai is the mastery of patience with the dual saber style, in waiting for one's opponent to leave openings and exploiting them. At its most basic levels, Jar'Kai is almost a defensive Form, where the Jedi waits for openings, parrying the opponent's onslaught. Both lightsabers can be used for defense, or one of the blades in the wielder's hands is used for attacking while the other one is used for defending, such as parrying, or for more offensive purposes. Jar'Kai user will usually strike before or after an attack by an opponent, striking with ferocious speed and accuracy, before immediately retreating to a defensive position. Jar'Kai is sometimes used as more of a tactic than an actual permanent fighting style, used to help gain an advantage. Jar'Kai users depend on their parrying abilities in order to stem the attacks of opponents, until they are ready to strike. Due to the defensive requirements, many Jar'Kai users have first mastered Soresu.

Notable Jar'Kai practitioners: Dark Underlord, Micah Giiett, Anakin Skywalker, Quinlan Vos, Serra Keto, Komari Vosa, Asajj Ventress, Maris Brood.

Form VII

The Ferocity Form, or the Way of the Vornskr: Juyo, Vaapad

The Ferocity Form goes beyond being a fighting style as it becomes a state of mind and a power. The state of mind requires that a user of Form VII be allowed to enjoy the fight and be given over to the thrill of battle and the thrill of victory.

Form VII, especially Vaapad, borders on the edge of falling to the dark side. Only great mastery and concentration on the light side can prevent Form VII user from succumbing to his own anger, which is why this form is rarely practiced among Jedi and is very dangerous.

The power of Juyo is simple: it is a channel for one's inner darkness; and it is a reflecting device. With strict control, a person's own emotions and inner darkness can be changed into a weapon. Juyo Jedi masters are able to take the hatred, anger and rage of the opponent and reflect it back at him. For Jedi to use this style it requires great mastery, discipline and, above all else, purity of heart and spirit. Juyo users are intense, focused, and introverted; there are even signs of pent-up hostility in them.

The double-bladed saber (staff) fighting techniques may include some elements of 7 classic forms. Also a lot of specific moves are introduced. This type of lightsaber combat is of an aggressive nature (resembling Juyo in its philosophy) and thus deems too close to the dark side by many Jedi. Double-bladed lightsaber combat allows more rapid attacks which are more difficult to parry for someone using an ordinary lightsaber. The greatest weakness of the double-bladed lightsaber is that it is difficult to defend with. Stabbing attacks are particularly difficult to parry.

Juyo was originally considered an incomplete form. Jedi Master mace Windu completed it by developing his own Form VII, which was named Vaapad.

Form VII demands the emotional and physical intensity of Form V, but it much more effectively controls it. Form VII does not appear as fancy as Form IV, as there are not moves like twirling and flipping, but the technical requirements are much higher. If mastered, Form VII results in extraordinary power.

Only through the learning of several other forms can a Jedi begin to understand Form VII, being the most demanding combat style. It involves so much physical combat ability that its training brings a Jedi very close to the Dark Side of the Force. To master Form VII, a Jedi have to employ bold movements and be more kinetic than in any other form. Form VII employs the use of overwhelming power directed through unconnected, precise movements that would keep an opponent continually off-guard.

Notable Juyo practitioners: Darth Maul, Vrook Lamar, Zez-Kai ell, Exar Kun.

Notable Vaapad practitioners: Mace Windu, Depa Billaba, Sora Bulq, Quinlan Vos.