Cogito Ergo Sum!

California Jones furrowed his brow. His eyes burned from lack of sleep. He had seen a number of Hollywood sacrifices that taught him the meaning of sacrifice. Mainly he had learned that study was not an Olympic Sport (otherwise, Olympic effort also required sacrifice.) His application of this had been financial. If the Client of an Educational Institution needed to make the purchase of his time, he would bank it in advance. The Movies used teams to excel at the last minute of an otherwise carefree semester, waiting until the last minute to study like IRL racing car drivers competing to out brake each other. He finally employed flash cards. They were not employed in the pedestrian application of boredom - these had the meanings on the same side as the quotation, and were shuffled according to a rule based system until they appeared humorous. Then they were re-shuffled until profound. This traded time for knowledge in a way that suited him, and he proceeded to write.

Cura te ipsum "Cure thyself." Good advice for a car mechanic, he thought.

Abusus non tollit usum "Abuse is no argument against proper use" Still good advice for a car mechanic.

Civis Romanus sum. "I am a Roman citizen" Probably not a car mechanic.

Homo sum, humani nihil a me alienum puto. "I am human, so nothing that is human is foreign to me." A car mechanic not a car.

Proximus sum egomet mihi "I am closest to myself" A policeman, not a car mechanic.

Non fui, fui, non sum, non curo. "I was not, I was, I am not, I don't care." NFFNSNC.

Sum quod eris; fui quod es. "I am what you will be. I was what you are." also NFFNSNC

To Sum up: To be incognito use Greek Summation. He scrawled a capital Sigma, and replaced the paper in the SD card holder. He would have it back to the school clock tower before sunrise.