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

"As a blind man has no idea of colours, so have we no idea of the manner by which the all-wise God perceives and understands all things."

"Nothing can be divided into fewer parts than it hath."

"It is possible that gravity may be essential to matter."

"The greatest challenges to the truth of the Holy Scriptures are not the work of infidels, but of professing Christians."