The only true wisdom is in knowing you know nothing.

There is only one good, knowledge, and one evil, ignorance.

Be the change that you wish to see in the world.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

Imagine the end desired and feel its reality. Follow it through, and you will get definite results.

I am not an Athenian or a Greek, but a citizen of the world.

Where there is shouting, there is no true knowledge.

My brain is only a receiver, in the Universe there is a core from which we obtain knowledge, strength and inspiration. I have not penetrated into the secrets of this core, but I know that it exists.

Reality is merely an illusion.