Mental phenomena are best understood in terms of their functions.

Sustainability isn’t a trend; it’s a responsibility we owe to future generations.

爱就是答案，这一点你很清楚。

绘画是一种道德行为。

调动洋人的敌对国家来攻打洋人，学习洋人先进的技术来制服洋人。

Experience is simply the name we give our mistakes.

数学的美在于它的简洁性和普遍性。