Waves from moving sources: Adagio. Andante. Allegro moderato.

Why should I refuse a good dinner simply because I don't understand the digestive processes involved?

Shall I refuse my dinner because I do not fully understand the process of digestion?

The best result of mathematics is to be able to do without it.

Theory is the essence of facts. Without theory scientific knowledge would be only worthy of the madhouse.

If it is love that makes the world go round, it is self-induction that makes electromagnetic waves go round the world.

Mathematics is an experimental science, and definitions do not come first, but later on.

...there is no absolute scale of size in nature, and the small may be as important, or more so than the great.

Euclid for children is barbarous.

Logic can be patient, for it is eternal.

However absurd it may seem, I do in all seriousness hereby declare that I am animated mainly by philanthropic motives. I desire to do good to my fellow creatures, even to the Cui bonos.

In order to understand, observe, deduce, man must first be conscious of himself as alive.

...being with you was so easy and natural - there was no strain - I never had to guard my words...

Whenever someone creates something with all of their heart, then that creation is given a soul.

On your 60th, here's something philosophical To give the old grey matter a stir How old would you be If you didn't know how old you were?

Ninety percent of my best friends back home are plumbers, electricians, builders, or landscapers. Most of our dads worked in trades.

When you believe in something, stand up for it, even if everyone is sitting.

There is a tension in relationships between wanting to return to the womb, but also wanting to be free. Because sometimes the woman's attentions can be overly maternal, and you want to go, 'Ahhhh!'

Our stories about our own lives are a form of fiction, I began to see and become more insistent as we grow older, even as we try to make them come out in some other way.

Once you make a lot of money, it's incredibly enjoyable to give it away. It's a way to satisfy the soul.

Every man, even the most blessed, needs a little more than average luck to survive this world.