Horace: Book I, Ode 2
Reading edition
"Tu ne quæsieris, scire nefas, quem mihi, quem tibi"
AD LEUCONOEN
Look not, Leuconoë, into the future; Seek not to find what the Answer may be; Let no Chaldean clairvoyant compute your Time of existence.... It irritates me! Better to bear what may happen soever Patiently, playing it through like a sport, Whether the end of your breathing is Never, Or, as is likely, your time will be short. This is the angle, the true situation; Get me, I pray, for I'm putting you hep: While I've been fooling with versification Time has been flying.... Both gates! Watch your step!