The great moral teachers of humanity were in a way artistic geniuses in the art of living.

No problem can be solved from the same level of consciousness that created it.

I do not believe in a personal God and I have never denied this but have expressed it clearly.

In the matter of physics, the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds.

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

Once you stop learning, you start dying

Don't listen to the person who has the answers; listen to the person who has the questions.