Uripina posted a good collection of pessimist quotes. Take a look.
It’s not easy to live every moment wholly aware of death. It’s like trying to stare the sun in the face: you can stand only so much of it. Because we cannot live frozen in fear, we generate methods to soften death’s terror. We project ourselves into the future through our children; we grow rich, famous, ever larger; we develop compulsive protective rituals; or we embrace an impregnable belief in an ultimate rescuer.
Some people—supremely confident in their immunity—live heroically, often without regard for others or for their own safety. Still others attempt to transcend the painful separateness of death by way of merger—with a loved one, a cause, a community, a Divine Being. Death anxiety is the mother of all religions, which, in one way or another, attempt to temper the anguish of our finitude. God, as formulated transculturally, not only softens the pain of mortality through some vision of everlasting life but also palliates fearful isolation by offering an eternal presence, and provides a clear blueprint for living a meaningful life.
But despite the staunchest, most venerable defenses, we can never completely subdue death anxiety: it is always there, lurking in some hidden ravine of the mind. Perhaps, as Plato says, we cannot lie to the deepest part of ourselves.
Irvin D. Yalom, “Staring at the Sun”