The Meccan Revelations: Page 31 from Volume One

Knowledge of conditions, and there is no way to them except through taste, so no rational person is able to define them or base their knowledge on evidence, such as knowledge of the sweetness of honey, the bitterness of patience, the pleasure of intercourse, love, ecstasy, longing, and similar types of sciences. These are sciences that it is impossible for anyone to know unless he is characterized by them, tastes them, and is similar to them of their kind in People of taste are like someone whose place of taste is dominated by yellow bitterness, and he finds honey to be bitter but it is not so, for the one who approached the place of taste was yellow bitterness.