"Give up thinking as though not giving it up. Observe the technique as though not observing."

In his 1975 book The Tao of Jeet Kune Do, Lee wrote:

"Give up thinking as though not giving it up. Observe techniques as though not observing."

Another statement by Tsunetomo stated:

"I am moving all day and not moving at all. I am like the moon underneath the waves that ever go on rolling and rocking."

In his 1975 book The Tao of Jeet Kune Do, Lee wrote:

 "I'm moving and not moving at all. I'm like the moon underneath the waves that ever go on rolling and rocking."

Another statement by Tsunetomo stated:

"Let yourself go with the disease, be with it, keep company with it: this is the way to get rid of it."

In his 1975 book The Tao of Jeet Kune Do, Lee wrote:

    "Let yourself go with the disease, be with it, keep company with it- this is the way to be rid of it."

Another statement by Tsunetomo stated:

"Turn yourself into a doll made of wood: it has no ego, it thinks nothing; and let the body and limbs work themselves out in accordance with the discipline they have undergone. This is the way to win."

In his 1975 book The Tao of Jeet Kune Do, Lee wrote:

    "Turn into a doll made of wood: it has no ego, it thinks nothing, it is not grasping or sticky. Let the body and limbs work themselves out in accordance with the discipline they have undergone."

Another statement by Tsunetomo stated:

"Araki Matayemon [a great swordsman of the Tokugawa era] gave this instruction to his nephew, Watanabe Kazuma, when they were about to engage in the deadly fight with their enemy: 'Let the enemy touch your skin and you cut into his flesh; let him cut into your flesh and you pierce into his bones; let him pierce into your bones and you take his life!' "

In his 1975 book The Tao of Jeet Kune Do, Lee wrote:

"Approach Jeet Kune Do with the idea of mastering the will. Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life! Do not be concerned with your escaping safely- lay your life before him!"

In the book, Suzuki also wrote about Zen as it applies to swordsmanship:

 "To state it in terms of swordsmanship, the genuine beginner knows nothing about the way of holding and managing the sword...when the opponent tries to strike him, he instinctively parries it."

"But as soon as the training starts, he is taught how to handle the sword,...and many other technical tricks- which makes the mind 'stop' at various junctures. For this reason whenever he tries to strike the opponent he feels unusually hampered; [he has lost altogether the original sense of innocence and freedom]."

"But as days and years go by, as his training acquires fuller maturity, his bodily attitude and his way of managing the sword advance toward 'no-mind-ness,' which resemble the state of mind he had at the very beginning of training when he knew nothing, when he was altogether ignorant of the art. The beginning and the end thus turn into next-door neighbors." 

John Little in his 1996 book The Warrior Within wrote that Lee "...drafted a fascinating philosophical treatise, which he called The Three Stages of Cultivation." Little wrote that Lee had said:

"The first stage is the primitive stage. It is a stage of original ignorance in which a person knows nothing about the art of combat...he simply blocks and strikes instinctively..."

"The second stage- the stage of sophistication or mechanical stage- begins when a person starts his training. He is taught the different ways of blocking, striking,...Unquestionably, he has gained the scientific knowledge of combat, but unfortunately his original self and sense of freedom are lost, and his action no longer flows by itself...his mind tends to freeze at different movements..."

"The third stage- the stage of artlessness or spontaneous stage- occurs when, after years of serious and hard practice, the student realizes that after all, gung fu is nothing special..."

It appears that Lee’s “original” treatise was not so original after all.