Each of us visits this Earth involuntarily, and without an invitation. For me, it is enough to wonder at the secrets.

One cannot deal with a problem with the same thinking that creates it.

The contemplation of this world beckoned as a liberation (...)The road to this paradise was not as comfortable and alluring as the road to the religious paradise; but it has shown itself reliable, and I have never regretted having chosen it.

Betterment of conditions the world over is not essentially dependent on scientific knowledge but on the fulfillment of human traditions and ideals.

Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.

The essentials of being a person of my type lies precisely in what they think and how they think, not in what they do. Your thoughts shape you.

I cannot accept any concept of God based on the fear of life or the fear of death, or blind faith. I cannot prove to you that there is no personal God, but if I were to speak of him I would be a liar.