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There are as many types of motion or change as there are meanings of the word 'is'.
— Motion
There are as many types of motion or change as there are meanings of the word 'is'.
The fulfilment of what exists potentially, in so far as it exists potentially, is motion.
In a race, the quickest runner can never overtake the slowest, since the pursuer must first reach the point whence the pursued started, so that the slower must always hold a lead.
That which is in locomotion must arrive at the half-way stage before it arrives at the goal.
If everything when it occupies an equal space is at rest, and if that which is in locomotion is always occupying such a space at any moment, the flying arrow is therefore motionless.
Newton... not only found a precise mathematical use for concepts like force, mass, inertia; he gave new meanings to the old terms space, time, and motion, which had hitherto been unimportant but were now becoming the fundamental categories of men's thinking.
The motions of the heavenly bodies could be charted according to Ptolemy just as correctly as according to Copernicus.
Something in the way she moves attracts me like no other lover…
Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
The fate of this man or that man was less than a drop, although it was a sparkling one, in the great blue motion of the sunlit sea.
