"It is not because the truth is too difficult to see that we make mistakes. It may even lie on the surface; but we make mistakes because the easiest and most comfortable course for us is to seek insight where it accords with our emotions--especially selfish ones."
"To revolutionize, at one effort, the universal world of human thought, human opinion, and human sentiment.... All that he has to do is to write and publish a very little book. Its title should be simple--a few plain words--"My Heart Laid Bare." But--this little book must be true to its title."
"Unlike Descartes, we own and use our beliefs of the moment, even in the midst of philosophizing, until by what is vaguely called scientific method we change them here and there for the better. Within our own total evolving doctrine, we can judge truth as earnestly and absolutely as can be, subject to correction, but that goes without saying."
"The predicate of truth-value of a proposition, therefore, is a mere fictive quality; its place is in an ideal world of science only, whereas actual science cannot make use of it. Actual science instead employs throughout the predicate of weight."