The more you know, the less sure you are.
The adjective is the enemy of the noun. Variant: The adjective is the enemy of the substantive.
It is amusing that a virtue is made of the vice of chastity; and it's a pretty odd sort of chastity at that, which leads men straight into the sin of Onan, and girls to the waning of their color.
It is impossible to translate poetry. Can you translate music?
Everything can be borne except contempt.
Once the people begin to reason, all is lost