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.

Nothing truly valuable can be achieved except by the unselfish cooperation of many individuals.

I am not more gifted than anybody else. I am just more curious than the average person and I will not give up a problem until I have found the proper solution.

For scientific endeavor is a natural whole the parts of which mutually support one another in a way which, to be sure, no one can anticipate.

If you can't explain something simply, you don't know enough about it.

Where the world ceases to be the scene of our personal hopes and wishes, where we face it as free beings admiring, asking and observing, there we enter the realm of Art and Science.

The development of general ability for independent thinking and judgment should always be placed foremost, not the acquisition of special knowledge.