text: Do you not see how skillful bees are in building their cells? How completely harmonious in sharing and enduring toil? Do you not see how the spider weaves a web so subtle that man's hand cannot imitate it; and what a task it is to arrange the threads, some directed straight towards the centre, for the sake of making the web solid, and others running in circles and lessening in thickness – for the purpose of tangling and catching in a sort of net the smaller insects for whose ruin the spider spreads the web? This art is born, not taught; and for this reason no animal is more skilled than any other. You will notice that all spider-webs are equally fine, and that the openings in all honeycomb cells are identical in shape. Whatever art communicates is uncertain and uneven; but Nature's assignments are always uniform. Nature has communicated nothing except the duty of taking care of themselves and the skill to do so; that is why living and learning begin at the same time. No wonder that living things are born with a gift whose absence would make birth useless. This is the first equipment that Nature granted them for the maintenance of their existence – the quality of adaptability and self-love. They could not survive except by desiring to do so. Nor would this desire alone have made them prosper, but without it nothing could have prospered. In no animal can you observe any low esteem, or even any carelessness, of self. Dumb beasts, sluggish in other respects, are clever at living. So you will see that creatures which are useless to others are alert for their own preservation. Farewell.