Small changes can have big effects when they help people break out of the poverty trap.

The world is full of stories, but only some of them get told.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

The trust of the innocent is the liar's most useful tool.

在数学中，你并不理解事物。你只是习惯了它们。