Closely allied with the two elements already noted is a third: the increase of knowledge, which, as in the case of astronomy, threw discredit upon the superior claims of antiquity and made modern men seem wiser than their sires. For ages the conviction had held the ground that the ancients were the wisest men who ever lived and that we, their children, were but infants in comparison. When, therefore, the Copernican astronomy proved true, when the first terrific shock of it had passed through resultant anger into wonder and from wonder into stupefied acceptance, and from that at last into amazed exultation at the vast, new universe unveiled, the credit of antiquity received a stunning blow. So far was Aristotle from being "the master of those who know" whom the medievalists had revered, that he had not even known the shape and motion of the earth or its relation with the sun. For the first time in history the idea emerged that humanity accumulates knowledge, that the ancients were the infants, that the moderns represent the age and wisdom of the race. Consider the significance of those words of Pascal in the seventeenth century: "Those whom we call ancient were really new in all things, and properly constituted the infancy of mankind; and as we have joined to their knowledge the experience of the centuries which have followed them, it is in ourselves that we should find this antiquity that we revere in others." [10] For the first time in history men turned their faces, in their search for knowledge, not backward but forward, and began to experience that attitude which with us is habitual--standing on tip-toe in eager expectancy, sure that tomorrow some new and unheard of truth will be revealed.
New inventions, new discoveries, new knowledge--even before the eighteenth century all these factors were under way. Then a new factor entered which has played a powerful part in substituting a progressive for a static world: new social hopes. The medieval age had no expectation of a better social life on earth. Charity was common but it was purely individual and remedial; it did not seek to understand or to cure the causes of social maladjustment; it was sustained by no expectation of better conditions among men; it was valued because of the giver's unselfishness rather than because of the recipient's gain, and in consequence it was for the most part unregulated alms-giving, piously motived but inefficiently managed. In the eighteenth century a new outlook and hope emerged. If man could pioneer new lands, learn new truth and make new inventions, why could he not devise new social systems where human life would be freed from the miseries of misgovernment and oppression? With that question at last definitely rising, the long line of social reformers began which stretched from Abbé de Saint-Pierre to the latest believer in the possibility of a more decent and salutary social life for human-kind. The coming of democracy in government incalculably stimulated the influence of this social hope, for with the old static forms of absolute autocracy now broken up, with power in the hands of the people to seek as they would "life, liberty and the pursuit of happiness," who could put limits to the possibilities? The medieval age was gone; the modern age had come, and its distinctive note was progress, with new inventions, new discoveries, new knowledge and new social hope.