The love of a teacher is like drops of dew, which can revive even a withered soul; the love of a teacher is like a warm spring breeze, which can melt even frozen emotions.

如果你想理解一个系统，试着改变它。

一个好的模型应该在复杂性和准确性之间取得平衡，捕捉基本动态而不过度拟合。

组合问题是泛心论最困难的方面。

Pleasures， then， and the avoidance of pains， are the ends that the legislator has in view.

风景塑造人，人也塑造风景。