"The greatest obstacle to progress in science is the blind adherence to authority."

"The multitude of students is very great, and the multitude of books is infinite, but the true knowledge is very rare."

"The Latins have corrupted the texts of the Scriptures, and of the philosophers."

"The study of music, as it is commonly taught, is of little utility."

"The greater part of the world is ignorant of the true wisdom, and is ruled by error and deception."