The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.

数学是一门活生生的学科，随着新的思想和发现不断演变。

君主对于有才能的贤良之人应当抬举，让他处于尊位，富贵绵长；对于没有能力且无德的人应当废弃，让他贫困低贱，成为受驱使的奴仆。