The road to hell is paved with works-in-progress.

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.

生命的历史是变化的历史。

Stay focused and never lose sight of your goals.

Black is a color of light, not of darkness.

You’ll get 10x better results by elevating good behavior rather than punishing bad behavior， especially in children and animals.

文学让我们在一生中活出千种生活。