当现有约束被改变,允许企业家从事新的生产活动形式时,经济增长就会发生。
来吧,一旦你觉得自己懂得了什么,就必须换一种角度来看。这可能显得很荒唐或者愚蠢,但必须试一下。
地理学首先是关于地方的科学,而非关于人的科学。
I don’t need a reason to be happy.
Our capacity to draw happiness from aesthetic objects or material goods in fact seems critically dependent on our first satisfying a more important range of emotional or psychological needs, among them the need for understanding, for love, expression and respect.
材料中拓扑和对称性之间的相互作用可以导致意想不到且令人兴奋的物理现象。