Unlearn not what you have learned. Antisthenes.
Unlearned men of books assume the care, / As eunuchs are the guardians of the fair. Young.
Unless a man can link his written thoughts with the everlasting wants of men, so that they shall draw from them as from wells, there is no more immortality to the thoughts and feelings of the soul than to the muscles and the bones. Ward Beecher.
Unless a man works he cannot find out what he is able to do. Hamerton.
Unless a tree has borne blossoms in spring, 50 you will vainly look for fruit on it in autumn. Hare.
Unless above himself he can / Erect himself, how poor a thing is man! Daniel.
Unless music exalt and purify, virtually it is not music at all. Ruskin.
Unless quickened from above and from within, art has in it nothing beyond itself which is visible beauty. Dr. John Brown.
Unless the people can be kept in total darkness, it is the wisest way for the advocates of truth to give them full light. Whately.
Unless we are accustomed to them from early youth, splendid chambers and elegant furniture are for people who neither have nor can have any thoughts. Goethe.