"He was horrified by Hiroshima and the prominent role of scientists in the development of atomic weapons. The tremendous expense of the Manhattan Project, he argued, necessitated the use of bombs to justify the investment. But that was not the only compulsion, nor was it patriotism. "The pressure to use the bomb, with its full killing power," he wrote later, "was not merely great from a patriotic point of view but was quite as great from the point of view of the personal fortunes of people involved in its development." Wiener did not think that the use of the bomb on Japan, on Orientals, was without significance. "I was acquainted with more than one of these popes and cardinals of applied science, and I knew very well how they underrated aliens of all sorts, particularly those not of the European race.""