As found in Terry Eagleton's The Meaning of Life:
"Truth is ugly. We possess art lest we perish of the truth."
Friedrich Nietzsche, The Will to Power
"…Out, out, brief candle!
Life's but a walking shadow, a poor player,
That struts and frets his hour upon the stage,
And then is heard no more; it is a tale
Told by an idiot, full of sound and fury,
William Shakespeare, Macbeth, Act 5, Scene 5
"Uncreated, without reason for being, without any connection with another being, being-in-itself is superfluous for all eternity."
Jean-Paul Sartre, Being and Nothingness
"Not how the world is, is the mystical, but that it is."
Ludwig Wittgenstein, Tractatus Logico-Philosophicus 6.44
"Sigmund Freud, for example, came to believe that the meaning of life was death – that the whole effort of Eros or the life-instincts was to return to a condition of death-like stasis, where the ego could no longer be harmed."
Terry Eagleton, The Meaning of Life, pg. 115