Qui omnes insidias timet in nullas incidit - He who fears every ambush falls into none. (Pubilius Syrus)
Qui potest capere capiat - Let him accept it who can. Freely: If the shoe fits, wear it
Qui pro innocente dicit, satis est eloquens - He who speaks for the innocent is eloquent enough. (Publius Syrus)

Qui scribit bis legit

He who writes reads twice

Qui tacet consentire videtur - He that is silent is thought to consent
Qui tacet consentit - Silence gives consent
Qui vir odiosus! - What a bore!
Qui vivat atque floreat ad plurimos annos - May he live and flourish for many years
Qui vult dare parva non debet magna rogare - He who wishes to give little shouldn't ask for much
Quia natura mutari non potest idcirco verae amicitiae sempiternae sunt - Since nature cannot change, true friendships are eternal. (Horace)