Quad nesciunt eos non interficiet - What they don't know won't kill them

Qualis pater talis filius - As is the father, so is the son; like father, like son

Quam bene vivas refert, non quam diu - The important thing isn't how long you live, but how well you live. (Seneca)

Quam se ipse amans-sine rivale! - Himself loving himself so much-without a rival! (Cicero)

Quam terribilis est haec hora - How fearful is this hour

Quemadmodum possums scire utrum vere simus an solum sentiamus nos esse? - How are we to know whether we actually exist or only think we exist?

Qui bene cantat, bis orat - He who sings well, prays twice

Qui dedit benificium taceat; narret qui accepit - Let him who has done a good deed be silent; let him who has received it tell it. (Seneca)

Qui desiderat pacem, praeparet bellum - Let him who wishes for peace prepare for war. (Vegetius)

Qui docet discit - He who teaches learns

Qui dormit, non peccat - One who sleeps doesn't sin

Qui habet aures audiendi audiat - He who has ears, let him understand how to listen

Qui ignorabat, ignorabitur - One who is ignorant will remain unnoticed

Qui nimium probat, nihil probat - One who proves too much, proves nothing

Qui non est hodie cras minus aptus erit - He who is not prepared today will be less so tomorrow. (Ovid)

Qui omnes insidias timet in nullas incidit - He who fears every ambush falls into none. (Pubilius 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)

Quid agis, medice? - What's up, Doc?

Quid Novi - What's New?

Quid nunc - What now?! (a nosy busybody)

Quid pro quo - Something for something (tit for tat)

Quid quid latine dictum sit, altum videtur - Anything said in Latin sounds profound

Quid rides? Mutato nomine de te fabula narratur - Why do you laugh? Just change the name and the tale is told of you. (Horace)

Quidvis Recte Factum Quamvis Humile Praeclarum - Whatever is rightly done, however humble, is noble

Quieta non movere - Not to move (things lying) quiet

Quis custodiet ipsos custodes? - Who shall keep watch over the guardians? (Luvenalis)

Quis separabit? - Who shall separate us?

Quis, quid, ubi, quibus auxiliis, cur, quomodo, quando? - Who, what, where, with what, why, how, when?

Quo ad hoc - As much as this (to this extent)

Quo animo? - With what spirit? (or intent?)

Quo fas et gloria docunt - Where right and glory lead

Quo signo nata es? - What's your sign?

Quo vadis? - Where are you going? / Whither goest thou?

Quod bonum, felix faustumque sit! - May it be good, fortunate and prosperous! (Cicero)

Quod erat demonstrandum (QED) - Which was to be shown or demonstrated

Quod erat faciendum - Which was to be done

Quod incepimus conficiemus - What we have begun we shall finish

Quomodo cogis comas tuas sic videri? - How do you get your hair to do that?

Quomodo vales - How are you?

Quos amor verus tenuit, tenebit - True love will hold on to those whom it has held. (Seneca)

Quot homines, tot sententiae - As many men, so many opinions. / There are as many opinions as there are men/people