And thus he has encountered his second enemy: Clarity! That clarity of mind, which is so hard to obtain, dispels fear, but also blinds.
It forces the man never to doubt himself. It gives him the assurance he can do anything he pleases, for he sees clearly into everything. And he is courageous because he is clear, and he stops at nothing because he is clear. But all that is a mistake; it is like something incomplete. If the man yields to this make-believe power, he has succumbed to his second enemy and will fumble with learning. He will rush when he should be patient, or he will be patient when he should rush. And he will fumble with learning until he winds up incapable of learning anything more.
What becomes of a man who is defeated in that way, don Juan? Does he die as a result?
No, he doesn’t die. His second enemy has just stopped him cold from trying to become a man of knowledge; instead, the man may turn into a buoyant warrior, or a clown. Yet the clarity for which he has paid so dearly will never change to darkness and fear again. He will be clear as long as he lives, but he will no longer learn, or yearn for anything.
But what does he have to do to avoid being defeated?
He must do what he did with fear: he must defy his clarity and use it only to see, and wait patiently and measure carefully before taking new steps; he must think, above all, that his clarity is almost a mistake. And a moment will come when he will understand that his clarity was only a point before his eyes. And thus he will have overcome his second enemy, and will arrive at a position where nothing can harm him any more. This will not be a mistake. It will not be only a point before his eyes.
(translated to Ukrainian by Oleksandr Korytskyy here).