Just in case you have a sudden desire to learn Latin, here are some useful sentences and phrases:

Ab initio (or ab ovo):  From the beginning

Absens haeres non erit:  Out of sight, out of mind.

Ad libitum (or Ad arbitrium):  At pleasure; at will

Ad nauseum:  So as to disgust or nauseate

Adsum:  I am here; I am present

Ante lucem:  Before daybreak

Ante meridiem:  Before noon

Ars est celare artem:  True art is to conceal art.

Aurea mediocritas:  The golden mean

Aut vincere aut mori:  Death or victory.

Bene orasse est bene studuisse:  To have studied well is to have prayed well.

Cadit quaestio:  No discussion (literally: The question falls to the ground)

Caeca est invidia:  Envy is blind.

Carpe diem:  Seize the day; enjoy yourself.

Cave canem.  Beware of the dog.

Cogito, ergo sum.  I think; therefore, I am.

Crambe repetita: Old news (literally: Cabbage warmed up the second time)

Cui bono?  For whose advantage?

Delenda est Carthago:  Carthage must be destroyed.

De minimis non curat lex:  The law does not concern itself with trifles.

Deo volente: God willing

Docendo discimus:  We learn by teaching.

Do ut des:  I give that you may give (principle of reciprocity)

Dulce est desipere in loco:  It is pleasant to play the fool at times.

Dulce et decorum est pro patria mori:  It is sweet and glorious to die for one's country.

Dum spiro, spero.  While I breathe, I hope.

Eheu!  Fugaces labuntur anni!  Alas!  Our fleeing years pass away!

En iono aletheia:  In wine there is truth.

Ex aequo et bono:  According to what is right and good

Ex cathedra:  With authority (literally: From the pulpit)

Exceptio probat regulam:  The exception proves the rule.

Exeunt omnes: All go out.

Ex ungue leonem:  You may tell the lion by his claws.

Faber quisque fortunae suae:  Everyone is the architect of one's own fortune.

Facilis est descensus averni:  The descent to hell is easy.

Faeces populi:  Scum of the people.

Fama nihil est celerius:  Nothing travels faster than scandal.

Festina lente:  Make haste slowly; don't be impetuous.

Fiat justitia ruat caelum:  Let justice be done though the heavens may fall.

Fiat lux:  Let there be light.

Flagrante delecto:  Caught in the very act

Fortuna favet fatuis:  Fortune favors fools.

Fuimus Troes:  We have seen better days (literally: We once were Trojans)

Hic jacet:  Here lies (is buried)

Honores mutant mores.  Honors change manners.

Humanum est errare.  To err is human.

Imo pectore:  From the bottom of one's heart

Impos animi:  Of weak mind

In caelo quies:  There is rest in heaven.

In flagrante delicto: In the commission of the act

In hoc signo vinces:  In this sign thou shalt conquer (Constantine's motto)

In re:  In the matter of

Inter alia: Among other things

Inter canem et lupum:  Twilight (literally: between the dog and the wolf)

Invita Minerva:   Being without genius (literally:  Minerva being unwilling

Ipso facto:  By the fact itself

Ipso jure:  By the law itself

Ira furor brevis est:  Anger is a brief madness.

Jacta alea est:  The die is cast

Jure divino:  By divine law

Jus canonicum:  Canon law

Jus civile:  The civil law

Jus divinum:  The divine law

Jus gladii:  The right of the sword

Lapsus linguae:  A slip of the tongue

Latine dictum:  Spoken in Latin

Laus Deo:  Praise to God.

Lex non scripta:  The unwritten law; the common law

Lex scripta:  The written law

Licentia vatum:  Poetic license

Loco citato:  In the place quoted or cited

Magna est veritas et praevalebit:  Truth is mighty and will prevail.

Magnum bonum:  A great good

Mala fide:  In bad faith

Me judice:  In my opinion (literally: me being the judge)

Mens sana in corpore sano:  A sound mind in a healthy body

Mors omnibus communis:  Death is common to all.

Ne cede malis, sed contra audentior ito:  Do not yield to misfortunes; on the contrary, go more boldly to meet them.

Nec temere, nec timide, Neither rashly nor timidly

Nemo me impune lacessit.  No one provokes me with impunity.

Nil desperandum:  Never despair.

Noli me tangere:  Touch me not.

Non deficiente crumena:  While the money lasts

Non sibi, sed patriae.  Not oneself, but for one's native land.

Nosce te ipsum:  Know thyself.

Nota bene:  Mark well

Omnia ad Dei gloriam:  All things for the glory of God.

Omnia mors aequat:  Death levels all distinctions.

Pax vobicsum:  Peace be with you.

Prima facie:  At first glance

Quae fuerent vitia mores sunt.  What were once vices are now in fashion.

Quanti est sapere:  How valuable is wisdom.

Quid nunc?  What now?  What news?

Qui tacet consentire videtur.  One who keeps silent gives one's consent.

Religio loci:  The spirit of the place

Requiescat in pace: May he or she rest in peace.

Resurgam:  I shall rise again.

Ruat caelum:  Let the heavens fall.

Sapere aude:  Dare to be wise.

Semper fidelis:  Always faithful

Semper paratus:  Always prepared

Serus in caelum redeas:  Long life to you (literally: May it be long before you return to heaven)

Sic semper tyrannis.  Thus always to tyrants.

Suum cuique:  Let each have one's own.

Terra firma:  The continent (literally: firm land)

Ubi mei, ibi apes.  Where the honey is, there are the bees.

Veni, vidi, vici:  I came, I saw, I conquered.

Veritas odium parit:  Truth begets hatred.

Vincet amor patriae:  The love of country will prevail.

Vox populi, vox Dei:  The voice of the people is the voice of god.