The only true wisdom is in knowing you know nothing.

Logic will get you from A to Z, imagination will get you everywhere.

Life is like riding a bicycle. To keep your balance, you must keep moving.

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.

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.

Once we accept our limits, we go beyond them.