Don't be afraid to change and grow.
The child is not a passive recipient of knowledge but an active participant in the learning process.
儿童不是知识的被动接受者，而是学习过程的积极参与者。
God only rarely reveals the future. When he does so, it is for one reason: it's a future that was written so as to be altered.
Human freedom is bounded by its choices.
The success of Pinduoduo lies in finding an underdeveloped market.
在科学中最令人兴奋的短语，预示着新发现的不是"我发现了！"而是"这有点奇怪..."
让自己振作起来的最好方法是试着让别人振作起来。