学习贵在专一,不以涉猎广泛为能。
过去是一个异国;他们在那里做的事情不同。
The best conservation strategies are those that align economic incentives with ecological benefits.
The search for happiness is one of the chief sources of unhappiness.
人类并非厌恶工作。根据可控条件,工作可能成为满足感的源泉,也可能成为惩罚的来源。