One can only pour out of a jug that which is in it.
Anthony Trollope (2016). “Anthony Trollope: The Chronicles of Barsetshire & The Palliser Novels (Unabridged): The Warden + The Barchester Towers + Doctor Thorne + Framley Parsonage + The Small House at Allington + The Last Chronicle of Barset + Can You Forgive Her? + The Prime Minister + Eustace Diamonds...”, p.1215, e-artnow (Open Publishing)