"The greatest errors in the world arise from the neglect of experiment."

"For in the books of the Gentiles, and of the Saracens, and of all unbelievers, there is much that is useful for the understanding of the Scriptures, and for the government of the world, and for the co…"

"Theories are of no use unless they can be verified by experiment."

"The common way of studying is rather for the sake of reputation than for the sake of knowledge."

"The four greatest stumbling blocks to understanding are: authority, long-standing custom, the sense of the ignorant crowd, and the hiding of one's own ignorance under the show of wisdom."