[130] [cap.23] And are not all the other things, relating to the body, dreams? Is not beauty an ephemeral thing, wasting away almost before it comes to its prime? And is not health an unsure thing by reason of the weaknesses which lie in wait to upset it? Again, is not strength a thing easily destroyed by diseases arising from innumerable causes? and is not the accuracy of all our outward senses easily overturned by the entrance of any vicious humour?