"The innocent sounding First Thesis, taken seriously, forces us to move our attention away from the individual toward humanity. Since there are no limits to the application of reason, and reason does not work instinctively, but requires "trial, practice, and instruction in order to gradually progress from one level of insight to another," individual human beings do not live long enough to learn the full use of reason. However, we find nature setting a short period for individual lives, but producing a series of generations in which each passes its own accomplishments onto its successor. The only way to make the capability of reasoning consistent with the First Thesis is to assume that rationality is to be fully developed only in the race, not in the individual."