The true scientist never loses the faculty of amazement.

Almost no germ is unconditionally dangerous to man; its disease-producing ability depends upon the body's resistance.

Its not stress that kills us, it is our reaction to it.

Nothing erases unpleasant thoughts more effectively than conscious concentration on pleasant ones.

Leaders are leaders only as long as they have the respect and loyalty of their followers.

Even after the greatest defeats, the depressing thought of being a failure is best combated by taking stock of all your past achievements.

My advice to any young person at the beginning of their career is to try to look for the mere outlines of big things with their fresh, untrained and unprejudiced mind.