Not every religion has to have St. Augustine's attitude to sex. Why even in our culture marriages are celebrated in a church, everyone present knows what is going to happen that night, but that doesn't prevent it being a religious ceremony.
Logic is not a body of doctrine, but a mirror-image of the world. Logic is transcendental.
The world is the totality of facts, not of things.
Whereof one cannot speak, thereof one must be silent.
Our greatest stupidities may be very wise.
If people never did silly things nothing intelligent would ever get done.