Reason is， and ought only to be the slave of the passions， and can never pretend to any other office than to serve and obey them.
理性是，也应该只是激情的奴隶，永远不能假装具有其他职责，而只能用于服务和服从它们。
Everything is hard before it is easy. The day before something is a breakthrough， it’s a stupid idea.
真相是，我们都有自己的监狱，而钥匙总是在触手可及的地方。
The challenge is not just to collect data, but to make sense of it in ways that improve lives.