"I am not ignorant that there are some who, having heard that in my treatises on the ordering of the spheres of the universe, I attribute certain motions to the terrestrial globe, will immediately shou…"

"To attack me, some people, who know nothing of mathematics, yet dare to pass judgment on these things, on the strength of some passage of Scripture, twisted to their purpose, are now presumptuously at…"

"For the world is spherical, and is bounded by a spherical surface."

"Yet because the novelty of the undertaking, which I knew to be contrary to the accepted views of the common people, might be regarded as absurd, I long hesitated."

"The order of the planets is this: Saturn, Jupiter, Mars, Earth, Venus, Mercury."