he has all the means at his disposal to become aware of his thoughts.

Let me rephrase the scene, as this initiated your response.

Two people are talking about rules.

One says:
"I am who I am, with my faults and weaknesses. I don't want to be punished for what is wrong and weak about me. Because I am fallible, I break rules, I can't help it. Since I can't help it, I am not responsible. I don't trust the rule-setting source anyway, and because it has more power than I do, I don't believe in its rules. I don't accept any rules given by this source. It is an evil source."

The other replies:
"Wonderful! You have just described a paradox! Which source do you trust in terms of rules?"

Under your premise, the one being questioned in this way has no way to answer this question, and the other has no way to further develop the potential for self-knowledge. They are both victims of their inability to communicate. There is no potential that could be realised through the art of communication. Have I understood you correctly?