The discovery of truth is prevented more effectively, not by the false appearance things present and which mislead into error, not directly by weakness of the reasoning powers, but by preconceived opinion, by prejudice.

To rise from error to truth is rare and beautiful.

The closing years of life are like a masquerade party, when the masks are dropped

The truth is that we all have to do more things than we can rightly do, if we are to do anything at all.

Eclecticism - every truth is so true that any truth must be false.

There are, first of all, two kinds of authors: those who write for the subject's sake, and those who write for writing's sake. [...] The truth is that when an author begins to write for the sake of covering paper, he is cheating the reader; because he writes under the pretext that he has something to say.