把这一句，留给此刻的你

I had found again and again that the most aberrant population of a species - often having reached species rank, and occasionally classified even as a separate genus - occurred at a peripheral location, indeed usually at the most isolated peripheral location.

我一次又一次地发现，一个物种中最异常的种群——往往达到了物种的级别，有时甚至被划分为一个单独的属——发生在一个边缘位置，实际上通常是在最孤立的边缘位置。

— Ernst Mayr 迈尔