The vitality of thought is in adventure. Ideas won't keep. Something must be done about them. When the idea is new, its custodians have fervor, live for it, and if need be, die for it.

But you can catch yourself entertaining habitually certain ideas and setting others aside; and that, I think, is where our personal destinies are largely decided.

Almost all new ideas have a certain aspect of foolishness when they are first produced.

Fundamental progress has to do with the reinterpretation of basic ideas.

Ideas won't keep; something must be done about them.

Generally students are the best vehicles for passing on ideas, for their thoughts are plastic and can be molded and they can adjust the ideas of old men to the shape of reality as they find it in villages and hills of China or in ghettos and suburbs of America.

Fundamental ideas are not a consequence of experience, but a result of the particular constitution and activity of the mind, which is independent of all experience in its origin, though constantly combined with experience in its exercise.

The air of ideas is the only air worth breathing.

To me, that is the essence of me as a photographer. It is those ideas, working with them, formulating them and eventually putting them down on paper, photographing them and then going on to the next step.

Photography suits the temper of this age - of active bodies and minds. It is a perfect medium for one whose mind is teeming with ideas, imagery, for a prolific worker who would be slowed down by painting or sculpting, for one who sees quickly and acts decisively, accurately.

If it weren't for received ideas, the publishing industry wouldn't have any ideas at all.

When I first started to get into writing, it was via music. I'd generate ideas for songs that would turn into stories, then they'd turn into novels. I was biased toward music.

Human history in essence is the history of ideas.

Globalization has changed us into a company that searches the world, not just to sell or to source, but to find intellectual capital - the world's best talents and greatest ideas.

We bring together the best ideas - turning the meetings of our top managers into intellectual orgies.