Correctitude implies nowadays a formal or fastidious use of words; and what is wanted is not so much the correct as the living use of words. It is the memory of the meaning of a word which is the life of the word.
I have not professionally dealt in truth. Many when they come to die have spent all the truth that was in them, and enter the next world as paupers. I have saved up enough to make an astonishment there.
All significant truths are private truths. As they become public they cease to become truths; they become facts, or at best, part of the public character; or at worst, catchwords.
Perhaps there is no other knowing than the mere competence of the act. If at the heart of one's being, there is no self to which one ought to be true, then sincerity is simply nerve; it lies in the unabashed vigor of the pretense. But pretense is only pretense when it is assumed that the act is not true to the agent. Find the agent.