Benevolence alone will not make a teacher, nor will learning alone do it. The gift of teaching is a peculiar talent, and implies a need and a craving in the teacher himself. – John Jay Chapman
Science is built up of facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house. – Henri Poincare
There are two reasons for drinking: one is, when you are thirsty, to cure it; the other, when you are not thirsty, to prevent it…. Prevention is better than cure. – Thomas Love Peacock, Melincourt, 1817