The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

在好处中要取大的，在害处中要取小的。在生活中会遇到好处，也会遇到坏处。对待好处，无疑应择其大者而取之，以获取最佳利益；对坏处，能避免则避免，不能避免则择其小者而取之，以最大限度地减少损失。