The difference between correlation and causation is not just academic—it can have profound policy implications.
The most dangerous thing in the wild is not the animals or the terrain. It’s your own mind.
你必须梦想,你必须有一个愿景,你必须为自己设定一个甚至可能让你有点害怕的目标,因为有时候那似乎远远超出你的能力范围。