Our statements about the external world face the tribunal of sense experience not individually but only as a corporate body.

No entity without identity.

To be is to be the value of a variable.

Emptiness wrongly grasped destroys the slow-witted, like a snake wrongly seized or a spell wrongly cast.

-- Nagarjuna

The course of Heaven is constant: it does not prevail because of Yao, nor does it cease because of Jie.

-- Xunzi

Mathematics is the alphabet in which God has written the universe.

-- Galileo Galilei

Observation always involves theory.

-- Edwin Hubble

Drawing is not form; it is the way of seeing form.

-- Edgar Degas

Divide each difficulty into as many parts as possible for a better solution.

-- René Descartes