A person cannot discover through any sort of movement the direction in which he ought to move, and yet every movement is inevitably performed in some direction. In just the same way it is impossible in philosophy or science to use mental effort in order to determine the direction in which such efforts should be made, and yet all mental effort is inevitably performed according to a given direction. It is religion that indicates the direction of such mental effort.

Religion and Morality by Leo Tolstoy