Cato's Being is a philosophical concept developed by the Roman philosopher Marcus Porcius Cato in the 1st century BC. It is based on the idea that all human beings have an innate sense of justice and morality, and that this should be the basis for all decisions. The term ESSE is derived from the Latin phrase 'ESSE quam videri, ' which translates to 'to be, rather than to seem.' This phrase encapsulates the idea that one should strive to be true to oneself and act according to one's own moral code, rather than simply appearing to do so.