Usefulness comes by labour, wit by ease. George Herbert.
Usque ad aras—To the very altars; to the last extremity.
Usque ad nauseam—Till one is utterly sick of it.
Usque adeone mori miserum est?—Is it then so 5 very dreadful to die? Virg.
Usque adeone / Scire tuum nihil est, nisi te scire hoc sciat alter?—Is then your knowledge to pass for nothing unless others know of it?
Usually speaking, the worst-bred person in company is a young traveller just returned from abroad. Swift.
Usury is a "concessum propter duritiam cordis" (a concession on account of hardness of heart); for, since there must be borrowing and lending, and men are so hard of heart as they will not lend freely, usury must be permitted. Bacon.
Usus est tyrannus—Custom is a tyrant. Pr.
Usus promptum facit—Practice makes perfect. 10 Pr.
Ut ager, quamvis fertilis, sine cultura fructuosus esse non potest, sic sine doctrina animus—As a field, however fertile, can yield no fruit without culture, so neither can the mind of man without education. Sen.