世界上没有绝对的对与错,只有适合不适合。
Mathematical intuition is like a muscle - it grows stronger with exercise.
孔子说:“将知识默记在心,学习时,不感到满足;教人时,不感到疲倦,对我来说没什么问题。”
The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.
气候变化是我们这个时代最大的挑战之一,我们必须立即采取行动。
生活中最美好的事情是我们爱的人、去过的地方和沿途创造的回忆。