Lord Chesterfield quotes: 
Sex: the pleasure is momentary, the position
ridiculous, and the expense  damnable. 
「快樂是短暫的，姿勢是可笑的，後果是悲慘的」。 

This is a better translation :「姿勢可笑，快樂短暫，而代價驚人」。

 I prefer :「姿勢可笑，快樂短暫，而代價真是他x的」。

 ( or 代價是可被詛咒的  ) 

Marriage is the death of hope.

Love is the answer, but while you're waiting for the answer, sex raises some pretty interesting questions.

An intellectual is a person who has discovered something more interesting than sex. Aldous Huxley (1894 - 1963)

Women need a reason to have sex. Men just need a place. Billy Crystal

God created sex. Priests created marriage. Voltaire (1694 - 1778)

Philosophy is to the real world as masturbation is to sex. Karl Marx (1818 - 1883)

Chastity always takes its toll. In some it produces pimples; in others, sex laws. Karl Kraus (1874 - 1936)

For flavor, instant sex will never supercede the stuff you have to peel and cook.

Sex is not the answer. Sex is the question. 'Yes' is the answer.

Chastity: the most unnatural of the sexual perversions. Aldous Huxley (1894 - 1963)

Sex: the thing that takes up the least amount of time and causes the most amount of trouble. John Barrymore (1882 - 1942)