For anything that moves round about in a circle, in less times than our ideas are wont to succeed one another in our minds, is not perceived to move; but seems to be a perfect entire circle of the matter or colour, and not a part of a circle in motion.
Izan ere, edozein gauza zirkulua eginez gure ideiak bata bestearen ondoren gogamenera etortzeko behar duten baino denbora laburragoan higitzen denean, haren higidurarik ez da hautematen, material edo kolore horretako zirkulu betea ematen baitu, eta ez higiduran ari den zirkuluaren zati bat.