数学是过去与现在之间的对话。
Mathematics is a dialogue between the past and the present.
观看与领悟是截然不同的两回事。除非悟出一样东西的美,否则不算领会。唯有如此,这样东西才真正存在。
You are not the opinion of somebody who doesn't know you.
把生活简化到极致,发现其中的真谛。
Psychology must be based on observable phenomena, not abstractions.