If you want to live a happy life, tie it to a goal, not to people or objects.

Be a loner. That gives you time to wonder.

We owe a lot to the Indians, who taught us how to count, without which no worthwhile scientific discovery could have been made.

The most important decision we make is whether we believe we live in a friendly or hostile universe.

Strange is our situation here on earth. Each of us comes for a short visit, not knowing why, yet sometimes seeming to divine a purpose.

I cannot seriously believe in it [quantum theory] because the theory cannot be reconciled with the idea that physics should represent a reality in time and space, free from spooky actions at a distance [spukhafte Fernwirkungen].

So I am living without fats, without meat, without fish, but am feeling quite well this way. It always seems to me that man was not born to be a carnivore.