You cannot teach a child any more than you can grow a plant. The plant develops its own nature. It also teaches itself, but you can help it to go forward in its own way. What you can do is to sow an aspiration-seed.

Wealth is like sea-water; the more we drink, the thirstier we become.

As we risk ourselves, we grow. Each new experience is a risk.

I am all the writers that I have read, all the people that I have met.

The cure for boredom is curiosity. There is no cure for curiosity.

All that I am or hope to be, I owe to my angel mother.

Theoretical physics is one of the few areas in which being disabled is not a handicap; it is all in the mind.