When in doubt, tell the truth. That maxim I did invent, but never expected it to be applied to me. I did say, "When you are in doubt," but when I am in doubt myself I use more sagacity.
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.
Love does not fail for you when you are rejected, betrayed or apparently not Loved. Love fails for you when you reject, betray and do not love. Therefore .. Love.
The solar system has no anxiety about its reputation, and the credit of truth and honesty is as safe; nor have I any fear that a skeptical bias can be given by leaning hard on the sides of fate, of practical power, or of trade, which the doctrine of Faith cannot down-weigh.
Why should you renounce your right to traverse the star-lit deserts of truth, of the premature comforts of an acre, house, and barn? Truth also has its roof, and bed, and board.