From the beginning of the world it has been ordained that certain signs must needs precede certain events.
Sed ita a principio incohatum esse mundum, ut certis rebus certa signa praecurrerent.
Original text (Latin)
Notes from Wikiquote
Book I, Chapter LII, section 118 | Compare: "Often do the spirits
Of great events stride on before the events,
And in to-day already walks to-morrow", Samuel Taylor Coleridge, The Death of Wallenstein, Act v, scene 1