The supernatural is the natural not yet understood.

The advantages found in history seem to be of three kinds， as they result either from the mere situation of the climate and country or from the form of government and of the character of the people， or from those finer principles and morals， which may be called the recommendations of philosophy.

文学是社会的镜子，清晰地反映出其美德和恶习。

情绪是为机体行动做准备的生物信号。