The world came about through a mistake. For he who created it wanted to create it imperishable and immortal. He fell short of attaining his desire.
- Gospel of Phillip.-

Read some of the Nag Hammadi texts (aka: the other, recently rediscovered [1945], books of the Bible). Gnosticism is as pessimistic as Buddhism (i.e., the world is suffering, life is suffering) with a paranoid twist (the god that created this world is deranged; a malicious imposter of the True God).