No animal can put external bodies in motion without the sentiment of a nisus or endeavour; and every animal has a sentiment or feeling from the stroke or blow of an external object, that is in motion.
Gorputzen edo gogoen eragiketa-kasu banako guztietan ez dago ezer inpresiorik sor lezakeenik ezta, beraz, ahal edo beharrezko konexioaren ideiarik iradoki dezakeenik ere.