无论我们观察到多少只白天鹅,都不能证明所有天鹅都是白色的。
Wise men talk because they have something to say; fools, because they have to say something.
Small changes in farming practices can lead to big impacts on global food security.
贪婪读书,终生学习,保持好奇,日日增慧。
最好的故事会为孩子的想象力留出成长的空间。