In slow motions. This train, the measure of other successions. The mind cannot fix long on one invariable idea. The extent of our power over the succession of our ideas. Ideas, however made, include no sense of motion.
Time is duration set out by measures.
A good measure of time must divide its whole duration into equal periods. The revolutions of the sun and moon, the properest measures of time for mankind. But not by their motion, but periodical appearances. No two parts of duration can be certainly known to be equal. Time not the measure of motion.