Overview
is the official motto of Quebec, and translated literally into English means: "I remember." The exact meaning of this short sentence is subject to several interpretations, though all relate to the history of the Quebec people. The motto can be found on all Quebec licence plates, among other things.
Origins
Étienne-Paschal Taché is credited with having popularized the phrase. In 1883, his son Eugène-Étienne Taché, Assistant Commissioner for Crown lands in Quebec and architect of the provincial Parliament building, had the motto carved in stone below the coat of arms of Quebec which appears above the Parliament Building's main entrance door. The motto then came into official use, even though the coat of arms was not adopted until 1939.
Meaning
Taché appears not to have left an explanation of the motto's intended meaning but he wrote a letter to the deputy minister of public works, Siméon Lesage, that showed what he intended to accomplish with the statues on the building's façade and described what they were intended to remind people of.
From Wikipedia (CC BY-SA 4.0).