"Human nature," I continued, "has its limits. It is able to endure a certain degree of joy, sorrow, and pain, but becomes annihilated as soon as this measure is exceeded. The question, therefore, is, not whether a man is strong or weak, but whether he is able to endure the measure of his sufferings. The suffering may be moral or physical; and in my opinion it is just as absurd to call a man a coward who destroys himself, as to call a man a coward who dies of a malignant fever." "Paradox, all paradox!" exclaimed Albert. "Not so paradoxical as you imagine," I replied. "You allow that we designate a disease as mortal when nature is so severely attacked, and her strength so far exhausted, that she cannot possibly recover her former condition under any change that may take place. "Now, my good friend, apply this to the mind; observe a man in his natural, isolated condition; consider how ideas work, and how impressions fasten on him, till at length a violent passion seizes him, destroying all his powers of calm reflection, and utterly ruining him. "It is in vain that a man of sound mind and cool temper understands the condition of such a wretched being, in vain he counsels him. He can no more communicate his own wisdom to him than a healthy man can instil his strength into the invalid, by whose bedside he is seated."