一个奇怪的事实是,根据是从生物学还是地球物理学的角度来探讨问题,关于地球史前条件的结论完全相反,这反映了我们目前知识的不完整状态。
I don't like to gamble, but if there's one thing I'm willing to bet on, it's myself.
Leadership is about making tough decisions with both courage and compassion.