Hope is not some abstract, softheaded concept. It is an idea with an engine.

One s mind once stretched by a new idea never regains its original dimensions

An artist who conforms to conventional ideas is nothing but a mere charlatan.

The wise only possess ideas; the greater part of mankind are possessed by them

The beauty of images lies behind things, the beauty of ideas in front of them.

I get a lot of big ideas, and occasionally I actually come up with one myself.

One can resist the invasion of armies; one cannot resist the invasion of ideas

True ideas seem to suffer from repetition, while stupid ones tend to flourish.

Not to engage in this pursuit of ideas is to live like ants instead of like men

In our world, to do what you want to do, you must first do what you have to do.

Public opinion is to an unconventional idea … what abortion is to sperm.

Every one says forgiveness is a lovely idea until they have something to forgive

Every man, it seems, interprets the world in the light of his habits and desires

Like birds leaving the dangerous places man must also leave his dangerous ideas!

An artist without ideas is a mendicant; barren, he goes begging among the hours.