"He who thinks half-heartedly will not believe in God; but he who thinks seriously will believe in God, and will not doubt that God is the author of the world."

"To me there has never been a higher source of earthly honor or distinction than that connected with advances in science."

"Can it be by accident that all birds beasts and men have their right side and left side alike shaped (except in their bowels) and just two eyes and no more on either side the face & just two ears on e…"

"For if the experiments which I relate be accurate, the science of colours will be a new one; for although colours have been observed from antiquity, yet the cause of their productions has remained unk…"

"The way to chastity is not to struggle directly with incontinent thoughts but to avert the thoughts by some employment, or by reading, or by meditating on other things."