"The heavenly motions are nothing but a continuous song for several voices, perceived not by the ear but by the intellect."

"I am not ashamed to confess that I have often been mistaken."

"So long as the mother, Ignorance, lives, it is not safe for Science, the offspring, to divulge the hidden causes of things."

"I have been a man of faith, and I have trusted in God's plan."

"I have often tried to grasp that which I have found."