Censorship of 16th-Century Big Thinker Erasmus Revealed

More than 400 years before modern-day governments tried shutting down blogs or blocking tweets, two people tasked with censoring a sometimes-critic of the Catholic Church in Renaissance Europe took to their duties in very different ways: one with great beauty, the other with glue and, it appears, a message.

Now, two books, housed at separate libraries at the University of Toronto, illustrate two unusual approaches censors took when dealing with the same author, Erasmus.

Born in Rotterdam around 1466, Erasmus was a prolific writer who sought out wisdom in ancient Greek and Latin texts. His writings, mass produced thanks to the printing press, were at times critical of the Catholic Church....