sic itur ad astra (L.), such is the way to the stars, to fame.
sic transit gloria mundi (L.), so passes away earthly glory.
sic volo, sic jubeo (L.), thus I will, thus I command.
sic vos non vobis (L.), thus you [toil] not for yourselves.
silent leges. See inter arma.
similia similibus curantur (L.), like things are cured by like—a hair of the dog that bit one.
si monumentum requiris, circumspice (L.), if you seek [his] monument, look round you [inscription for the architect Christopher Wren's tomb in St Paul's].
sine irâ et studio (L.), without ill-will and without favour.
siste, viator! (L.), stop, traveller!