shared between ourselves and death

"We do not suddenly fall on death, but advance towards it by slight degrees; we die every day. For every day a little of our life is taken from us; even when we are growing, our life is on the wane. We lose our childhood, then our boyhood, and then our youth. Counting even yesterday, all past time is lost time; the very day which we are now spending is shared between ourselves and death. It is not the last drop that empties the water-clock, but all that which previously has flowed out; similarly, the final hour when we cease to exist does not of itself bring death; it merely of itself completes the death-process. We reach death at that moment, but we have been a long time on the way."

--Lucius Annaeus Seneca, Ad Lucilium epistulae morales, ca. 65 CE, translated by Richard M. Gummere