If you beat your head against the wall, it is your head that breaks and not the wall.

The challenge of modernity is to live without illusions and without becoming disillusioned.

To tell the truth is revolutionary.

The starting-point of critical elaboration is the consciousness of what one really is, and is 'knowing thyself'as a product of the historical processes to date, which has deposited in you an infinity of traces, without leaving an inventory.

I turn and turn in my cell like a fly that doesn't know where to die.

If you think about it seriously, all the questions about the soul and the immortality of the soul and paradise and hell are at bottom only a way of seeing this very simple fact: that every action of ours is passed on to others according to its value, of good or evil, it passes from father to son, from one generation to the next, in a perpetual movement.

I'm a pessimist because of intelligence, but an optimist because of will.