Future contingents cannot be certain to us, because we know them as such. They can be certain only to God whose understanding is in eternity above time. Just as a man going along a road does not see those who come after him; but the man who sees the whole road from a height sees all those who are going along the road at the same time.

Thomas Aquinas (1225-1274) Italian friar, philosopher, theologian

Summa Theologica, I, q. 14, art. 13, ad 3 (1265-1274)