Reasoning at every step he treads, Man yet mistakes his way, Whilst meaner things, whom instinct leads, Are rarely known to stray. William Cowper
All our progress is an unfolding, like the vegetable bud, you have first an instinct, then an opinion, then a knowledge, as the plant has root, bud and fruit. Trust the instinct to the end, though you can render no reason. Ralph Waldo Emerson
But honest instinct comes a volunteer; Sure never to o'er-shoot, but just to hit, While still too wide or short in human wit. Alexander Pope