1. A Latin phrase translated as “blank slate” or more literally as “erased slate” or Clean Slate. Originates from the Roman tabula that they used for notes. The slate started empty, upon which notes could be written, then erased to write again. 2. The idea that people are born without built-in mental content and that therefore all knowledge comes from experience or perception. 3. Referenced in the writings of Greek philosopher Aristotle (384-322 BC.)