To be rooted is perhaps the most important and least recognized need of the human soul.

Nothing is black or white.

Unless someone like you cares a whole awful lot, nothing is going to get better. It's not.

The two offices of memory are collection and distribution.

You're only given a little spark of madness. You mustn't lose it.

No one can make you feel inferior without your consent.

Computers are useless. They can only give you answers.

No temptation can gravitate to a man unless there is that in his heart which is capable of responding to it.

Enthusiasm... the sustaining power of all great action.

The hardest thing to explain is the glaringly evident which everybody has decided not to see.

By seeing London, I have seen as much of life as the world can show.

I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.

Of puns it has been said that those who most dislike them are those who are least able to utter them.

There is only one way... to get anybody to do anything. And that is by making the other person want to do it.

An intellectual is a man who doesn't know how to park a bike.

Everything beautiful has a mark of eternity.

There is no terror in the bang, only in the anticipation of it.

New opinions are always suspected, and usually opposed, without any other reason but because they are not common.

The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic

Go on, get out. Last words are for fools who haven't said enough.

To forbid us anything is to make us have a mind for it.