"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 th…"

"That which is in locomotion must arrive at the half-way stage before it arrives at the goal."

"Questions do not change the truth. But they give it motion."

"If everything when it occupies an equal space is at rest, and if that which is in locomotion is always occupying such…"

"Newton... not only found a precise mathematical use for concepts like force, mass, inertia; he gave new meanings to t…"

"The motions of the heavenly bodies could be charted according to Ptolemy just as correctly as according to Copernicus."

"Nicholas of Cusa... dared to teach that there is nothing at all without motion in the universe — the latter is infini…"

"It is in the admission of ignorance and the admission of uncertainty that there is a hope for the continuous motion o…"

"There are as many types of motion or change as there are meanings of the word 'is'."