Knowledge is limited.

I don't believe in mathematics.

If only I had known, I should have become a watchmaker.

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.

What separates me from most so-called atheists is a feeling of utter humility toward the unattainable secrets of the harmony of the cosmos.

It would of course be a great step forward if we succeeded in combining the gravitational field and the electromagnetic field into a single structure. Only so could the era in theoretical physics inaugurated by Faraday and James Clerk Maxwell be brought to a satisfactory close.

Life is sacred, that is to say, it is the supreme value, to which all other values are subordinate.