Full Idea
Being qua being, taken universally and not in regard to some part of it, is the domain of the science of philosophy.
Gist of Idea
Being, taken simply as being, is the domain of philosophy
Source
Aristotle (Metaphysics [c.324 BCE], 1060b23)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.324