Note 9 — Chapter V · MY FIRST BOOK.
Reading edition
“It is a fact of Consciousness to which all experience bears witness and which it is the duty of the philosopher to admit and account for, instead of disguising or mutilating it to suit the demands of a system, that there are certain truths which when once acquired, no matter how, it is impossible by any effort of thought to conceive as reversed or reversible.”—Mansel’s Metaphysics, p. 248.