Leadership is particularly necessary to ensure ready acceptance of the unfamiliar and that which is contrary to tradition.

The very exercise of leadership fosters capacity for it.

So long as large armies go to battle, so long will the air arm remain their spearhead.

Your brain activates a magnificent system to store memories as reference points for you to learn from... not to create a past for you to be stuck in.

Who ever achieved greatness by playing it safe!

The world is complex, dynamic, multidimensiona l; the paper is static, flat. How are we to represent the rich visual world of experience and measurement on mere flatland?

I don't like the idea of not being able to knock about the town, you know.

A person creates what they defend against.

I like to admire. I'm a fan of beauty.

Confidence is its own security.

That is why it is so important not only to have excellent treatment but also to try to get back the immune defense, because there you have a natural defense that takes place everywhere.

Science is wonderful, science is important, and so are children, so are young people, and so what could be better than to write a science book for young people?

Shakespeare says, we are creatures that look before and after; the more surprising that we do not look around a little, and see what is passing under our very eyes.