Latin Mottoes
- Aliena pericula, cautiones nostrae.-
 
Others' dangers are our warnings.
- Anno Domini (A.D)
 
In the Year of Our Lord
- Ante Meridiem (am)
 
Before midday
- Ars Gratia Artis (MGM slogan)
 
Art for the sake of art
- Carpe diem
 
Seize the day
- Caveat emptor
 
Let the buyer beware.
- Cave canem
 
Beware of the dog.
- Cavete a canibus
 
Beware of the dogs.
- Dum Spiro, Spero
 
While I breath, I hope
- E pluribus unum
 
Out of many, one
- Exempli Gratia (e.g.)
 
For (the sake of) example
- Id est (i.e.)
 
That is
- Lapsus linguae
 
a slip of the tongue
- Per se
 
In itself
- Post Meridiem (pm)
 
After midday
- Quod erat demonstrandum (QED)
 
What was to be demonstated
- Quid pro quo
 
Something for something
- Sic semper tyrannis
 
Thus always to tyrants
- Semper fidelis
 
Always faithful
- Semper paratus
 
Always ready
- Tempus fugit
 
Time flies
- Terra firma
 
Solid land
- Veni, vidi, vici
 
I came, I saw, I conquered
- Versus (vs.)
 
Turned to (competing against)
- Vice versa
 
The other way around
The internet is one of the best media to obtain Latin resources. A few sites to get you started are listed here.
Orbis Latinus Language information on Latin, Vulgar latin, Early Romance Languages and the Late Romance Languages.
Lacus Curtius Plentiful supply of Latin texts and translations.
Forum Romanum Many Latin resources.
Perseus Digital Library Excellent resource for texts and translations online.