Morals of Savants.—A regular and rapid advance in the sciences is only possible when the individual is compelled to be not so distrustful as to test every calculation and assertion of others, in fields which are remote from his own. A necessary condition, however, is that every man should have competitors in his own sphere, who are extremely distrustful and keep a sharp eye upon him. From this juxtaposition of “not too distrustful” and “extremely distrustful” arises sincerity in the republic of learning.