所有人都是不朽的，但那些没有受教育的人是以一种更低级和不令人羡慕的方式不朽。
All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.
The ethical implications of genetic modification must be carefully considered.
成功不是靠运气，而是靠努力、决心和从失败中学习。