The only thing we can be certain of in this life is that we can be certain of nothing.

He who finds a thought that lets us a little deeper into the eternal mystery of nature has been granted great peace.

Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance by an invisible piper.

Innovation is not the product of logical thought, even though the final product is tied to a logical structure.

Genius is making complex ideas simple, not making simple ideas complex

The single most important decision any of us will ever make is whether or not to believe the universe is friendly.

About Newton: Nature to him was an open book, whose letters he could read without effort.