为人宁愿正直地安贞守拙，也不可靠邪门歪道谋取赢余。

Randomized evaluations can help us understand what works and what doesn't in development.

A red rose is not selfish because it wants to be a red rose. It would be horribly selfish if it wanted all the flowers in the garden to be both red and roses.

Without a good user experience, even the best business model is just talk.

即使跌倒100次，我也会第101次站起来。

诚信是持久成功的基础。