A doubt arises

and is cleared. Another arises and that is cleared, making way for yet another; and so it goes on. So there is no possibility of clearing away all doubts.

See to whom the doubts arise. Go to their source and abide in it. Then they cease to arise. That is how doubts are to be cleared.

- Sri Ramana Maharshi
"Be As You Are"
The Teachings of Sri Ramana Maharshi
edited by David Godman