M

Magister mundi sum! - I am the master of the universe!

Magna cum laude - With high honor

Magnas inter oper inops - A pauper in the midst of wealth. (Horace)

Male parta male dilabuntur - What has been wrongly gained is wrongly lost. (Ill-gotten gains seldom prosper.) (Cicero)

Malum consilium quod mutari non potest - It's a bad plan that can't be changed. (Publilius Syrus)

Mater artium necessitas - Necessity is the mother of invention

Materiam superabat opus - The workmanship was better than the subject matter. (Ovid)

Me fallit - I do not know

Me iudice - (I being judge) in my judgement

Me transmitte sursum, caledoni! - Beam me up, Scotty!

Mea culpa - My fault

Mea culpa - My mistake

Mea mihi conscientia pluris est quam omnium sermo - My conscience means more to me than all speech. (Cicero)

Medice, cura te ipsum! - Physician, heal thyself! (Versio Vulgata)

Medici graviores morbos asperis remediis curant - Doctors cure the more serious diseases with harsh remedies. (Curtius Rufus)

Medicus curat, natura sanat - The physician treats, nature cures

Medio tutissimus ibis - You will go safest in the middle (Moderation in all things.)(Ovid)

Melius est praevenire quam praeveniri - Better to forestall than to be forestalled

Melius frangi quam flecti - It is better to break than to bend

Melius tarde, quam nunquam - Better late than never

Mellita, domi adsum - Honey, I'm home

Mendacem memorem esse oportet - A liar needs a good memory. (Quintilianus)

Mens agitat molem - The mind moves the matter. (Vergil)

Mens regnum bona possidet - An honest heart is a kingdom in itself. (Seneca)

Mens sana in corpore sano - A sound mind in a sound body. (Juvenalis)

Meum pactum dictum - My word is my bond

Mihi cura futuri - My concern is the future

Mihi ignosce. Cum homine de cane debeo congredi - Excuse me. I've got to see a man about a dog

Minime senuisti! - You haven't aged a bit!

Minus habens - Absentminded

Mirabile dictu - Wonderful to say/relate. (Vergil)

Modus Operandi - Way of operating

Mors ultima linea rerum est - Death is everything's final limit. (Horace)

Multi famam, conscientiam pauci verentur - Many fear their reputation, few their conscience. (Pliny)

Multis post annis - Many years later

Multum in parvo - Much in little

Multun, non multa - Much, not many (quality not quantity)

Munit haec et altera vincit - One defends and the other conquers

Mus uni non fidit antro - A mouse does not rely on just one hole. (Plautus)

Musica delenit bestiam feram - Music soothes the savage beast

Mutatis mutandis - What was to be changed having been changed