'You have forgotten the most important thing,' replied David--'the influence of public feeling upon the feelings of the individual. Man is a social being whose thoughts and feelings are derived only in part from his own head and his own heart, whilst a not less important part of them--I might say the fundamental tone which gives colour and character to the individual's intellectual and emotional life--has its source in the social surroundings for the time being. Everyone stands in a not merely external, but also an internal, indissoluble relation of contact with those who are around him; he imagines that he thinks and feels and acts as his own individuality prompts, but he thinks, feels, and acts for the most part in obedience to an external influence from which he cannot escape--the influence of the spirit of the age which embraces all heads, all hearts, and all actions. Had the enlightened humane freethinker of to-day been born three centuries ago, he would have persecuted those who differed from him upon the most subtile, and, as he now thinks, ridiculous points of belief, with the same savage hatred as did all others who were then living. And had he seen the light yet a few centuries earlier--say, among the pagan Saxons of the days of Charlemagne--human sacrifices would have shocked him as little as they did the other worshippers of the goddess Hertha. And the man who, brought up as a pagan Saxon in the forests of the Weser and the Elbe, would have held it honourable and praiseworthy to make the altar-stone of Hertha smoke with the blood of slaughtered captives, would in that same age have felt invincible horror at such a deed, had he--with exactly the same personal capabilities--by accident been born in imperial Byzantium instead of among German barbarians. At Byzantium, on the other hand, he would have indulged in lying and deceit without scruple, whilst, if surrounded by the haughty German heroes, he--in other respects the same man from head to foot--would have been altogether incapable of such weak vices. Since this is so--since the virtues and vices, the thoughts and the feelings, of those of our contemporaries among whom we are born and brought up give the fundamental tone to our own character, it is simply impossible that the members of a community, maddened by a ceaseless fear of hunger, should pass their lives in undisturbed serenity. Where an immense majority of the people never know what the morrow may bring forth--whether it may bring a continuance of miserable existence or absolute starvation--under the dominion of a social order which makes one's success in the struggle for existence depend upon being able to snatch the bread out of the mouth of a competitor, who in his turn is coveting the bread we have, and is striving with feverish anxiety to rob us of it--in a society where everyone is everyone's foe, it is the height of folly to talk of a real gladsome enjoyment of life.