The real art of conversation is not only to say the right thing at the right place but to leave unsaid the wrong thing at the tempting moment.
真正的谈话艺术不仅是在正确的地方说正确的话，而且是在诱惑的时刻不说错误的话。
Small changes can have big effects when they help people break out of the poverty trap.
我只是想改变世界，一次一颗亮片地改变。
创新不仅仅是技术，更是改变我们的思维方式。