You don’t have to be the best, but you have to be the best you can be.
你不必成为最好的，但你必须尽你所能做到最好。
Every story has a beginning, a middle, and an end, but not necessarily in that order.
The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.
CRISPR是一种工具，和任何工具一样，它的影响取决于我们如何使用它。