Don Juan talking to Carlos Castaneda about becoming a Warrior

You think about yourself too much and that gives you a strange fatigue that makes you shut off the world around you and cling to your arguments.
A light and amenable disposition is needed in order to withstand the impact and the strangeness of the knowledge I am teaching you. Feeling important makes one heavy, clumsy, and vain. To be a man of knowledge one needs to be light and fluid.

One has to reduce to a minimum all that is unnecessary in one's life.

Once you decide something put all your petty fears away. Your decision should vanquish them. I will tell you time and time again, the most effective way to live is as a warrior. Worry and think before you make any decision, but once you make it, be on your way free from worries or thoughts; there will be a million other decisions still awaiting you. That's the warrior's way.
A warrior thinks of his death when things become unclear. The idea of death is the only thing that tempers our spirit.

To be a warrior you have to be crystal clear.

My acts are sincere but they are only the acts of an actor because everything I do is controlled folly. Everything I do in regard to myself and my fellow men is folly, because nothing matters.
Certain things in your life matter to you because they're important; your acts are certainly important to you, but for me, not a single thing is important any longer, neither my acts nor the acts of any of my fellow men. I go on living though, because I have my will . Because I have tempered my will throughout my life until it's neat and wholesome and now it doesn't matter to me that nothing matters. My will controls the folly of my life.
Once a man learns to see he finds himself alone in the world with nothing but folly. Your acts, as well as the acts of your fellow men in general, appear to be important to you because you have learned to think they are important.
We learn to think about everything, and then we train our eyes to look as we think about the things we look at. We look at ourselves already thinking that we are important. And therefore we've got to feel important! But then when a man learns to see , he realizes that he can no longer think about the things he looks at, and if he cannot think about what he looks at everything becomes unimportant. Everything is equal and therefore unimportant.
We need to look with our eyes to laugh. When our eyes see , everything is so equal that nothing is funny. My laughter, as well as everything I do is real but it also is controlled folly because it is useless; it changes nothing and yet I still do it.
One must always choose the path with heart in order to be at one's best, perhaps so one can always laugh.
You don't understand me now because of your habit of thinking as you look and thinking as you think. By "thinking" I mean the constant idea that we have of everything in the world. Seeing dispels that habit and until you learn to see you will not really understand what I mean.
Our lot as men is to learn. I have learned to see and I tell you that nothing really matters. A man of knowledge lives by acting, not by thinking about acting, nor by thinking about what he will think when he has finished acting. A man of knowledge chooses a path with heart and follows it; and then he looks and rejoices and laughs; and then he sees and knows. He knows that his life will be over altogether too soon; he knows that he, as well as everybody else, is not going anywhere; he knows, because he sees , that nothing is more important than anything else. In other words, a man of knowledge has no honor, no dignity, no family, no name, no country, but only life to be lived, and under these circumstances his only tie to his fellow men is his controlled folly. Thus a man of knowledge endeavors, and sweats, and puffs, and if one looks at him he is just like any ordinary man, except that the folly of his life is under control. Nothing being more important than anything else, a man of knowledge chooses any act, and acts it out as if it matters to him. His controlled folly makes him say that what he does matters and makes him act as if it did, and yet he knows that it doesn't; so when he fulfills his acts he retreats in peace, and whether his acts were good or bad, or worked or didn't, is in no way part of his concern.
You think about your acts, therefore you have to believe your acts are as important as you think they are, when in reality nothing of what one does is important. Nothing! But then if nothing really matters, as you ask me, how can I go on living? It would be simple to die; that's what you say and believe, because you're thinking about life, just as you're thinking now what seeing would be like. You want me to describe it to you so you can begin to think about it, the way you do with everything else. In the case of seeing , however, thinking is not the issue at all, so I cannot tell you what it is like to see . Now you want me to describe the reasons for my controlled folly and I can only tell you that controlled folly is very much like seeing ; it is something you cannot think about.
Our lot as men is to learn and, as I've said, one goes to knowledge as one goes to war; with fear, with respect, aware that one is going to war, and with absolute confidence in oneself. Put your trust in yourself. There's no emptiness in the life of a man of knowledge, everything is filled to the brim and everything is equal. For me there is no victory, or defeat, or emptiness. Everything is filled to the brim and everything is equal and my struggle is worth my while.
In order to become a man of knowledge one must be a warrior. One must strive without giving up, without a complaint, without flinching, until one sees , only to realize then that nothing matters. You're too concerned with liking people or with being liked yourself. A man of knowledge likes, that's all. He likes whatever or whoever he wants, but he uses his controlled folly to be unconcerned about it.
My controlled folly applies only to myself and to the acts I perform while in the company of my fellow men.

You must talk to the plants you're going to pick before you pick them. In order to see the plants you must talk to them personally, you must get to know them individually; then the plants can tell you anything you care to know about them.
You fail to understand that I am not joking. When a sorcerer attempts to see , he attempts to gain power.
You think everything in the world is simple to understand because everything you do is a routine that is simple to understand.

You have to have an unbending intent in order to become a man of knowledge.