The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
The truth is like the sun. You can shut it out for a time, but it ain't goin' away.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
Sustainability isn't a choice; it's our responsibility to the planet and future generations.
