Laurence Arthur Burd, The Cambridge Modern History, Volume 1… (1902)
“ Failure was the seal of Divine disapproval, and to Machiavelli, as to all Italian politicians at his time, the one unpardonable sin. The essential requisite for success was, in his judgment, a constant adaptation between the individual and the surroundings of his life. Sufficient versatility of character, thus understood, would imply a perpetual adjustment of means to the needs of the moment, the ability to reverse a policy or a principle at the call of expediency, and a readiness to compromise or renounce the ideal. The world is rich in failures, because character is too rigid. ”
