正义是一种非理性的理想。

最成功的人是那些擅长备用计划的人。

自然万物发展变化的规律是：发展到尽头，就会走向反面；发展到极盛之后，就会趋于衰落。

Actions are right in proportion as they tend to promote happiness； wrong as they tend to produce the reverse of happiness.

"We are all fools in love."