Not just those drugs that many deem recreational. I know my perceptions change rather dramatically when I'm hungry vs. satiated, tired vs. rested, happy vs. sad

Not just those drugs that many deem recreational. I know my perceptions change rather dramatically when I'm hungry vs. satiated, tired vs. rested, happy vs. sad, listening to music vs. listening to waves, in love vs. alone, etc., etc. etc. If the doors of perception were cleansed every thing would appear to man as it is, infinite. For man has closed himself up, till he sees all things through narrow chinks of his cavern. - William Blake