are fitted together and their form is fixed, and by these men think and feel pleasure and pain. So it is by blood especially that we think; for in this especially are mingled <all> the elements of things. And those in whom equal and like parts have been mixed, not too far apart, nor yet small parts, nor exceeding great, these have the most intelligence and the most accurate senses; and those who approximate to this come next; and those who have the opposite qualities are the most lacking in intelligence. And those in whom the elements are scattered and rarefied, are torpid and easily fatigued; and those in whom the elements are small and thrown close together, move so rapidly and meet with so many things that they accomplish but little by reason of the swiftness of the motion of the blood. And those in whom there is a well-tempered mixture in some one part, are wise at this point; so some are good orators, others good artisans, according as the mixture is in the hands or in the tongue; and the same is true of the other powers. Theophr. _de sens._ 59; _Dox._ 516. And Empedokles says of colours that white is due to fire, and black to water. Cic. _De nat. deor._ xii.; _Dox._ 535. Empedokles, along with many other mistakes, makes his worst error in his conception of the gods. For the four beings of which he holds that all things consist, he considers divine; but it is clear that these are born and die and are devoid of all sense. Hipp. _Phil._ 3; _Dox._ 558. And Empedokles, who lived later, said much concerning the nature of the divinities, how they live in great numbers beneath the earth and manage things there. He said that Love and Strife were the first principle of the all, and that the intelligent fire of the monad is god, and that all things are formed from fire and are resolved into fire; and the Stoics agree closely with his teaching, in that they expect a general conflagration. And he believed most fully in transmigration, for he said: ‘For in truth I was born a boy and a maiden, and a plant and a bird, and a fish whose course lies in the sea.’ He said that all souls went at death into all sorts of animals. Hipp. _Phil._ 4; _Dox._ 559. See Herakleitos, p. 64.