"On the Insignificance and Grief of Life" - the work of the famous German philosopher Arthur Schopenhauer Arthur Schopenhauer, 1788-1860) . *** A person is in the power of unlimited desires - nothing can satisfy his passions, his need for possession, since every satisfied impulse gives rise to a new one. Other notable works of A. Schopenhauer's are On Will in Nature, On Free Will, On the Basis of Morals, The Two Fundamental Problems of Ethics, On the Fourfold Root of the Law of Sufficient Reason, and The World as Will and Representation. Arthur Schopenhauer was called a "pessimist philosopher": he considered the existing world "the worst possible", in contrast to the German thinker Gottfried Leibniz.