Epistemology: “A study of the origin, nature, and extent of knowledge.” A Preface to Philosophy, Mark B Wodehouse. 5th Edition
e.g. ‘Cogito Ergo Sum.’ (I think therefore I am) Rene Descartes
Or: Cogito Ergo Mum (I think, therefore I’m Mum)*. Abby Boid
*pedants grant me some artistic licence here, will you?