世界的眼泪是恒定的。每当一个人开始哭泣，另一个地方就有人停止哭泣。笑声也是如此。
The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
为明天做的最好准备就是今天做到最好。
永不停止创新，永不停止进步。
过去并没有死去；它甚至还没有过去。
In physics, the simplest explanation is often the correct one.
Memory is the only paradise from which we cannot be expelled.
Education begins the gentleman, but reading, good company and reflection must finish him.