Always remember what Heraclitus said: 'the death of earth is the birth of water, the death of water is the birth of atmosphere, the death of atmosphere is fire, and conversely'. Remember, too, his image of the man who forgets the way he is going; and: 'they are at variance with that with which they most continuously have converse (Reason which governs the Universe), and the things they meet with every day appear alien to them'; and again: 'we must not act and speak like men who sleep, for in sleep we suppose that we act and speak'; and 'we must not be like children with parents', that is, accept things simply as we have received them.