The urge had become irresistible. By the end of that year Guevara laid plans for a trip from which he would never come home, even when he returned. He would return from the trip a changed man, in transition to some other conception of life. He was a traveler now; the act of discovery is not merely the basis of travel but also the quintessential revolutionary act. Every journey overturns the established order of one's own life, and all revolutionaries must begin by transforming themselves.