Primo Levi

"Sooner or later in life everyone realizes that perfect happiness is unattainable, but there are few who pause to consider the antithesis: that perfect unhappiness is equally unattainable. The obstacles preventing the realization of both of those extreme states are of the same nature: they derive from our human condition which is opposed to everything infinite. The ever-insufficient knowledge of the future opposes it. The certainty of death opposes it: for it places a limit on every joy, but also on every grief."
- Primo Levi