The modern world has made us free, but it has also made us miserable.

I don't sing because I'm happy; I'm happy because I sing.

The most beautiful things in life are not things, they’re moments.

《三民主义·民权主义·第三讲》(1924年）

生存的唯一方法就是互相照顾。

I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.

If we find the answer to that, it would be the ultimate triumph of human reason - for then we would know the mind of God.