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.
The highest truth needs no communicating, for it is by its very nature self-propelling. It radiates its influence silently as the rose its fragrance without the intervention of a medium.
It is not given to man to know the whole Truth. His duty lies in living up to the truth as he sees it, and in doing so, to resort to the purest means, i.e., to non-violence. God alone knows absolute truth. Therefore, I have often said, Truth is God. It follows that man, a finite being, cannot know absolute truth. Nobody in this world possesses absolute truth. This is God's attribute alone. Relative truth is all we know. Therefore, we can only follow the truth as we see it. Such pursuit of truth cannot lead anyone astray.
Therefore, be ye lamps unto yourselves, be ye a refuge to yourselves. Hold fast to the truth as a lamp; hold fast as a refuge to the truth. Look not for refuge to anyone besides yourselves.