"I have always believed that the love of truth is the most powerful of all passions."

"The American Indians are, in a certain sense, a foreign people, and they have no place in the midst of the European population."

"The most dangerous of all errors is to believe that error itself is harmless."

"The American democracy is a very imperfect democracy, but it is the best that the world has ever seen."

"I have encountered passionate materialists whose closing of the eyes to faith was as fanatical as religious zeal."