John Quincy Adams

From the Introduction...

Adams was also a hard man. He did not aim to please, and he largely succeeded. He drove away many of his old friends and offended most of his onetime allies. He frightened his children and exasperated his long-suffering wife, Louisa. He was that rare politician who is happiest alone. He knew this and perpetually rebuked himself for his bearish manner, but he did not really wish to be otherwise. He lived according to principles he considered self-evident. Others of his contemporaries did so as well, of course; what set Adams apart was that his principles were so inviolable that he eagerly sacrificed his self-interest to them. As president he accomplished very little of his ambitious agenda in part because he refused to do anything to reward his friends or punish his enemies. Such inflexibility is a dubious virtue for a politician.

It is, however, an estimable virtue for a man who needs to hold fast in the face of adversity.