Unseasonable mirth always turns to sorrow. Cervantes.
Unselfish and noble acts are the most radiant epochs in the biography of souls. When wrought in the earliest youth, they lie in the memory of age like the coral islands, green and sunny amidst the melancholy waste of ocean. Dr. Thomas.
Unser Gefühl für Natur gleicht der Empfindung 25 des Kranken für die Gesundheit—Our feeling for nature is like the sensation of an invalid for health. Schiller.
Unsociable tempers are contracted in solitude, which will in the end not fail of corrupting the understanding as well as the manners, and of utterly disqualifying a man for the satisfactions and duties of life. Men must be taken as they are, and we neither make them nor ourselves better by flying from or quarrelling with them. Burke.
Unstable as water, thou shalt not excel. Bible.
Unstained thoughts do seldom dream on evil; / Birds never limed no secret bushes fear. Shakespeare.
Unstät treiben die Gedanken / Auf dem Meer der Leidenschaft—Unsteady is the course of thought on the sea of passion. Schiller.
Unsterblich ist was einmal hat gelebt—What 30 has once lived is immortal. G. Kinkel.
Unsterblich sein, das ist der Dichtkunst Los—Immortality is the destiny of the poetic art. Feuchtersleben.
Unter allen Völkerschaften haben die Griechen den Traum des Lebens am schönsten geträumt—Of all peoples the Greek has dreamt most enchantingly the dream of life. Goethe.