Every adversity, every failure, every heartache carries with it the seed on an equal or greater benefit.

Be as you wish to seem.

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

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.

They can because they think they can.

Everyone thinks of changing the world, but no one thinks of changing himself.

Remember that sometimes not getting what you want is a wonderful stroke of luck.

Education is the most powerful weapon which you can use to change the world.

Those who cannot change their minds cannot change anything.