"Conception is taking together into one idea the element of meaning common to a number of objects and things. ...Conception is... the simplest act of thinking; it is the apprehension of the universal, as perception is the apperception of the particular. We perceive this man; we conceive man. ...it is universal through its ideal element, or what it points to, not from its existence."
January 1, 1970
https://en.wikiquote.org/wiki/Concept