I. Ceteris paribus
“All other things being equal.” It’s useful when you want to isolate a single issue and focus on it. I studied economics in college, and I had a professor who used this phrase all the time.
II. Caveat venditor
Most of us have heard caveat emptor, which is “buyer beware.” This phrase is its counterpart, “seller beware”--a good reminder for an entrepreneur.
III. Sine qua non
An absolutely necessary component or ingredient. Determination is the sine qua non of entrepreneurship.
IV. Panem et circenses
This one is actually better known now by its English translation: bread and circuses; the idea that many people can be placated by diversions and security, rather than aiming for greatness. (See also, soda and reality TV.)
V. Carpe noctem
You know carpe diem--”seize the day.” This is its companion: “seize the night.” It could be a party anthem, but it’s more about being willing to put in whatever time is necessary to achieve a worthy goal.
VI. Carpe vinum
This one is better for party time: “Seize the wine.”
VII. Aurea mediocritas
The golden mean: a Greek phrase that lasted into Roman times.
VIII. Audentes fortuna iuvat
“Fortune favors the bold.” People who think things can’t be done are often interrupted by others who are actually doing them.
IX. Semper fidelis
“Always faithful,” the motto of the U.S. Marine Corps. Even if you’re not a Marine, it’s good to know this one and what it means.
X. Semper paratus
“Always prepared,” the motto of both the U.S. Coast Guard and (in Anglicized format) the Boy Scouts.
XI. Acta non verba
“Actions, not words.” It happens to be the motto of the U.S. Merchant Marine Academy.
XII. Mea culpa
My apology; my error. To really emphasize it, go for “mea culpa, mea culpa, mea maxima culpa.”
XIII. Ad infinitum
Thirteen phrases is a good start, but the truth is that this list could be a lot longer--on toward infinity.