The only true wisdom is in knowing you know nothing.

Anyone who has never made a mistake has never tried anything new.

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

Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.

A clever person solves a problem. A wise person avoids it.

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.

The most important knowledge is that which guides the way you lead your life.

Reality is merely an illusion.

Once we accept our limits, we go beyond them.