"You have to make difficult choices in your life, and you just have to be happy with them"

"Cats and monkeys; monkeys and cats; all human life is there"

"I feel happy to terrify kids"

"Business is the salt of life"

"It is a useless life that is not consecrated to a great ideal. It is like a stone wasted on the field without becoming a part of any edifice"

"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"

"There is more to life than increasing its speed"

"Life yields only to the conqueror. Never accept what can be gained by giving in. You will be living off stolen goods, and your muscles will atrophy"

"As soon as there is life there is danger"

"There is a tide in the affairs of men, Which taken at the flood, leads on to fortune. Omitted, all the voyage of their life is bound in shallows and in miseries. On such a full sea are we now afloat. And we must take the current when it serves, or lose our ventures"

"The man is happiest who lives from day to day and asks no more, garnering the simple goodness of life"