We owe a lot to the Indians, who taught us how to count, without which no worthwhile scientific discovery could have been made.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Persistence is the most powerful force on earth, it can move mountains.

The true sign of intelligence is not knowledge but imagination.

How do I work? I grope.

A ship is always safe at the shore - but that is NOT what it is built for.

When you trip over love, it is easy to get up. But when you fall in love, it is impossible to stand again.