We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

Although quantum mechanics has been around for nearly 70 years, it is still not generally understood or appreciated, even by those that use it to do calculations.

Time travel may be possible, but it is not practical.

Every man should marry. After all, happiness is not the only thing in life.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

Chaos, when left alone, tends to multiply.

We should seek the greatest value of our action.