Being cannot be one in form, though it may be in what it is made of. (Even some of the physicists hold it to be one in the latter way, though not in the former.) Man obviously differs from horse in form, and contraries from each other.
physicistsquotes
We physicists, on the other hand, must take for granted that the things that exist by nature are, either all or some of them, in motion — which is indeed made plain by induction.
motion / nature / physicists