"We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances."

"The motions which the planets now have could not spring from any natural cause alone, but were impressed by an intelligent Agent."

"What is there in places almost empty of air (such as the space between the planets) to hinder the free motion of bodies?"

"The most beautiful order of the planets and comets could not have arisen without the design and dominion of an intelligent and powerful Being."

"Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion."