Human nature,” I continued, “has its limitations. It can bear joy and suffering, and pain to a certain degree, but perishes when this point is passed. Here there can therefore be no question of whether a man is strong or weak, but of whether he can endure his suffering, be it moral or physical. And I find it just as astonishing to say that a man who takes his own life is a coward, as it would be improper to call a man a coward who dies of a pernicious fever.