"Memory is a complicated thing, a relative to truth, but not its twin."

"RNA interference is a fascinating process that has opened up new avenues for understanding gene regulation and has potential therapeutic applications."

正该来时，先生（老子）应时来到这世间；正该去时，先生顺时离开这世间。安于时势，顺应自然规律，哀乐就不能进入心中。

I'm at a payphone trying to call home, all of my change I spent on you.

A good abstraction is one that captures the essential aspects of a concept while ignoring the irrelevant details.