Forbidden things seem more appealing; people want things more if (or, in some way, because) they can't have them.

Nothing is impossible or out of reach.

(colloquial, rhetorical question) A rhetorical question in response to a question to which the answer is an emphatic yes.

(Britain, literally) Direct me to the restroom (US) or WC (British).

laughing will make one feel better

In a battle or dispute, attacking the opposition first is better than waiting for them to attack.

Alternative form of the hand that rocks the cradle rules the world

Conciseness of expression is an essential characteristic of astute, perceptive, or witty remarks.

(US) Alternative spelling of discretion is the better part of valour

(an expression of) the doctrine that all knowledge is subjective, being derived from observations made by humans, and there can be no objective truth