永远保持节俭，除非是为了自己的热情。

The past is a foreign country; they do things differently there.

Chemistry is the art of manipulating matter at the molecular level, and catalysis is its most powerful brush.

悲伤会改变形态但永远不会真正离开我们。

过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。

商业的成功源于对你所做之事的科学与艺术的双重理解。