Think of color, pitch, loudness, heaviness, and hotness. Each is the topic of a branch of physics

Round about the accredited and orderly facts of every science there ever floats a sort of dustcloud of exceptional observations, of occurrences minute and irregular and seldom met with, which it always proves more easy to ignore than to attend to.

If you look at a shape like a straight line, what's remarkable is that if you look at a straight line from close by, from far away, it is the same; it is a straight line.

Think of color, pitch, loudness, heaviness, and hotness. Each is the topic of a branch of physics

Bottomless wonders spring from simple rules, which are repeated without end.

The existence of these patterns [fractals] challenges us to study forms that Euclid leaves aside as being formless, to investigate the morphology of the amorphous. Mathematicians have disdained this challenge, however, and have increasingly chosen to flee from nature by devising theories unrelated to anything we can see or feel.

Nobody will deny that there is at least some roughness everywhere