Historians must break out of the prison of ideas.

If we disown history we are at its mercy. To have a reasonable knowledge of the past is to possess an anchor which is likely to prevent us from being swept towards false ideas about the present and future.

[http://etext.virginia.edu/cgi-local/DHI/dhi.cgi?id=dv2-70 Extended discourse in Dictionary of the History of Ideas]

It's impossible not to admire a person who devoted his life to his ideas.

Even the most sublime ideas sound ridiculous if heard too often.

Las ideas confusas y los estanques turbios parecen profundos.

an intellectual concept abstracts from everything sensuous, it is not abstracted from sensuous things, and perhaps would be more correctly called abstracting than abstract. Intellectual concepts it is more cautious, therefore, to call pure ideas, and concepts given only empirically, abstract ideas.

Metaphysics has as the proper object of its enquiries three ideas only: God, freedom, and immortality.

Here's some bumper stickers I'd like to see:

Ironically, it was not in his nihilistic view of Buddhism but in such ideas as amor fati and the Dionysian as the overcoming of nihilism that Nietzsche came closest to Buddhism, and especially to Mahāyāna.

Ideas are refined and multiplied in the commerce of minds. In their splendor, images effect a very simple communion of souls.

I think we need some new Christmas carols with a more modern approach. Of course, I wouldn't abandon the religious theme completely. How about "Holy Christ, the Christmas Tree's on Fire"? Or "Jesus, Can You Believe It's Christmas Again?" This ought to get the ball rolling; I'm hoping you people will take it from here.