化学之美在于它能够在分子水平上解释世界。
The beauty of chemistry lies in its ability to explain the world at the molecular level.
We are all bit-part actors in each other's lives.
译文：人生得一知己必须要对知己问心无愧，读书人多读书，一定要学以致用。赏析：做人做事凭着良心方能服众，才不会招致怨愤和祸患。读书的目的就是学以致用，我们不能读死书，死读书，我们要让书中的知识来指导我们的生活。