The truth is that we are all capable of great evil, given the right circumstances.
Success is not final, failure is not fatal: it is the courage to continue that counts.
理论的任务不仅是了解自然是什么以及它是如何运作的,而且要尽可能接近理解为什么自然是这样的而不是其他样子的不可达到的目标。