"Truly the very intellectual force, industry, and labour, which philosophers and scientists expend in the pursuit of their glory, are in time the cause of its extinction or obscurément. For by their own great exertions they open out a path for the still further advancement of the science, which in time progresses so rapidly that their writings and names fall gradually into oblivion. And it is certainly difficult for most men to esteem others for a knowledge greatly inferior to their own. Who can doubt that the twentieth century will discover error in what the wisest of us regard as unquestionable truths, and will surpass us greatly in their knowledge of the truth?"