In my view, it is the most important function of art and science to awaken this feeling and keep it alive in those who are capable of it.

Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.

Everyone likes me, yet nobody understands me.

One must take what nature gives as one finds it.

Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

The most important human endeavor is the striving for morality in our actions.

I'd rather be an optimist and a fool than a pessimist and right.