You can only form the minds of reasoning animals upon Facts: nothing else will ever be of any service to them. Stick to Facts, sir!
Source: Mr. Gradgrind, in Hard Times, bk. 1, ch. 1, 1854.
-- Charles Dickens, (Feb 7 1812-1870), English novelist, dramatist; He was one of most prolific and popular English novelists, e.g., A Christmas Carol, 1843 & Tale of Two Cities, 1859.