Humanity and its works will fade at some point in the future. Not just our books and our music and our paintings and every other form of art, but our memories, our stories. Our very civilisation will crumble and fall. Time does that, extinguishes all candles.
The span of time also shows us that the dead outnumber the living, by a significant and growing margin. As such, we could say that life is the exception, not the rule of existence. The rule is death and its primary weapon is eternity; nothing can oppose it. All and everything is powerless against it. No armour and no shield can resist it. Neither deft manoeuvre nor heroic flight can escape it, for time is both relentless in its march and indifferent to what stands in its way.