It is the obvious which is so difficult to see most of the time. People say 'It's as plain as the nose on your face.' But how much of the nose on your face can you see, unless someone holds a mirror up to you?

No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.

So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe.

Old men tend to forget what thought was like in their youth; they forget the quickness of the mental jump, the daring of the youthful intuition, the agility of the fresh insight. They become accustomed to the more plodding varieties of reason, and because this is more than made up by the accumulation of experience, old men think themselves wiser than the young.

Many a prophecy, by the mere force of its being believed, is transmuted to fact.

Postulates are based on assumption and adhered to by faith. Nothing in the Universe can shake them.

Creationists make it sound as though a 'theory' is something you dreamt up after being drunk all night.