The environment shapes behavior through the mechanism of reinforcement.

纯粹根据基金过去的表现购买基金是投资者可以做的最愚蠢的事情之一。

理论的任务在于用更简单的东西替代待解释的现象，其中包含所发生事件的本质。

The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.

The world is full of signs and wonders that come, and go, and if you are lucky you might catch the tail of one as it flies past.