"Causal inference requires careful thought about the assumptions underlying your analysis."

Money can buy comfort, but not the deeper satisfactions of life.

合作是可持续林业进步的根系。

跑步不是要比别人好，而是要比过去的自己更好。

Time is your friend; impulse is your enemy.

Literature is the most powerful antidote to dogma.

你给予的越多，你得到的就越多。