Consider Drunkenness, how by Variation of bodily Conditions thou mayst alter its Effect upon the Mind, and the Contrary, remembering the Discipline of Theophrastus Paracelsus, how, opposing Wine to bodily Exercise, he obtained a certain Purification and Exaltation. Yet, were he seven times greater, he had not done this with Oil of Vitriol. Learn then that there are certain definite Channels of Action and Reaction between Body and Mind; sound these, and trim thy Sails accordingly, not thinking that thou art in the open Sea. And if so be that thou in thy sounding findest new Channels, rejoice and map them for the Profit of thy Fellows; But remember always that to find a new Way up a Precipice removeth not the Precipice. For where thou, o Angel and yet Man, hast trod delicately albeit without Fear, Fools will rush in to their Destruction.