The Will to Believe, and Other Essays in Popular Philosophy by William James - In William James's 1896 lecture titled "The Will to Believe", James defends the right to violate the principle of evidentialism in order to justify hypothesis venturing. This idea foresaw 20th century objections to evidentialism and sought to ground justified belief in an unwavering principle that would prove more beneficial. Through his philosophy of pragmatism William James justifies religious beliefs by using the results of his hypothetical venturing as evidence to support the hypothesis's truth. Therefore, this doctrine allows one to assume belief in a god and prove its existence by what the belief brings to one's life.This was criticized by advocates of skepticism rationality, like Bertrand Russell in Free Thought and Official Propaganda and Alfred Henry Lloyd with The Will to Doubt. Both argued that one must always adhere to fallibilism, recognizing of all human knowledge that "None of our beliefs are quite true; all have at least a penumbra of vagueness and error, " and that the only means of progressing ever-closer to the truth is to never assume certainty, but always examine all sides and try to reach a conclusion objectively.