The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
出自孟郊《登科后》,郦波在讲解中分析了其历史背景与情感表达。
数学的目标是使简单的复杂化,使复杂的简单化。
Every time we teach a child something, we keep him from inventing it himself.