Given the millions of billions of Earth-like planets, life elsewhere in the Universe without a doubt, does exist. In the vastness of the Universe we are not alone.

I'm more interested in the future than in the past, because the future is where I intend to live.

The more one chases the quanta, the better they hide themselves.

If I could do it all again, I'd be a plumber.

My pacifism is not based on any intellectual theory but on a deep antipathy to every form of cruelty and hatred.

One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

I have remained a simple fellow who asks nothing of the world; only my youth is gone - the enchanting youth that forever walks on air.