Naguib Mahfouz said this quote

It is an indication of truth's jealousy that it has not made for anyone a path to it, and that it has not deprived anyone of the hope of attaining it, and it has left people running in the deserts of perplexity and drowning in the seas of doubt; and he who thinks he has attained it, it dissociates itself from, and he who thinks he has dissociated himself from it has lost his way.