Philosopher William James:
"Essential truth, the truth of the intellectualists, the truth with no one thinking it, is like the coat that fits tho no one has ever tried it on, like the music that no ear has listened to. It is less real, not more real, than the verified article; and to attribute a superior degree of glory to it seems little more than a piece of perverse abstraction-worship."
Author Willa Cather:
"Artistic growth is, more than it is anything else, a refining of the sense of truthfulness. The stupid believe that to be truthful is easy; only the artist, the great artist, knows how difficult it is."
Novelist Herman Melville:
"Truth is the silliest thing under the sun. Try to get a living by the Truth—and go to the Soup Societies. Heavens! Let any clergyman try to preach the Truth from its very stronghold, the pulpit, and they would ride him out of his church on his own pulpit bannister."
My personal favorite, Jesus in John 8:31:
"Ye shall know the truth, and the truth shall make you free."