10. In general then, since the usual arguments by which philosophers demonstrate that beasts partake of reason are these following,—purpose, contrivance, memory, passions, care of their young ones, gratefulness to those from whom they receive kindnesses, and the remembrance of shrewd turns, to which we may add the search after and choice of what is needful and beneficial for them, together with apparent shows of virtue, as of fortitude, society, continence, and magnanimity,—if we consider the marine creatures, we shall not find that our strictest observation can perceive in them any of these excellences, or at best they are such obscure and imperfect glimmerings as are scarce discernible. But in terrestrial and land animals, there is not any man but may behold the most luculent, the most evident and uncontrollable demonstrations in the world of all that has been said. In the first place, observe the designs and preparations of bulls provoked to combat, and of wild boars whetting their teeth. Again, elephants—since, by digging up or tearing down the trees which they intend to feed upon, they blunt and wear out their tushes—make use of only one for those purposes, but reserve the other strong and sharp for their own defence. The lion also always walks with his feet inverted, hiding his claws withinside his paw, to prevent the hunter from tracing him easily by his footing. For the track of a lion’s claw is not easily to be found, so that the hunters are frequently at a loss, and wander after the obscure and scarce discernible footsteps of those beasts. You have heard also, I suppose, of the ichneumon, how that he arms himself as completely as a soldier with his breastplate and cuirass prepared for battle; in such a manner does that creature surround and wrap himself about with a coat of mail, when he attacks the crocodile. Admirable are the preparations of swallows before they go to lay their eggs, how they place the more solid stubble for foundations, and upon that build up the slighter straws; and if they perceive that the nest wants mud to serve as glue, you may observe how they fly to the next lake or sea, and after they have skimmed the superficies of the water with their wings,—so as to make them moist, yet not heavy with wet,—they lick up the dust, and so daub and bind together the loose and ill-cohering parts of the nest. As for the form of their architecture, it is composed neither of angles nor of many sides, but smooth and, as much as may be, spherical; for that such a figure is lasting and capacious, and not easily affording entrance to creatures that lie in wait for their destruction from without.