No political party can possibly lead a great revolutionary movement to victory unless it possesses revolutionary theory and knowledge of history and has a profound grasp of the practical movement.

If money is your hope for independence you will never have it. The only real security that a man will have in this world is a reserve of knowledge, experience, and ability.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

Partial knowledge is more triumphant than complete knowledge; it takes things to be simpler than they are, and so makes its theory more popular and convincing.

It is more pleasant and useful to go through the 'experience of the revolution' than to write about it.

The stomach is the only part of man which can be fully satisfied. The yearning of man's brain for new knowledge and experience and for more pleasant and comfortable surroundings never can be completely met. It is an appetite which cannot be appeased.