“Blessed is the man who expects nothing, for he shall never be disappointed.”

Do good by stealth, and blush to find it fame.

Men are nearly always willing to believe what they wish to believe.

To study and not think is a waste. To think and not study is dangerous.

It takes 20 years to build a reputation and five minutes to ruin it. If you think about that, you'll do things differently.

Bad times have a scientific value. These are occasions a good learner would not miss.

I begin with an idea and then it becomes something else.

The universe is full of magical things, patiently waiting for our wits to grow sharper.