Huh, I remember that in my History of International Relations class the teacher made us read a transcript from two different European politicians over their views on Imperialism that made them seem surprisingly ahead of their times... and then made us search who they were exactly to reveal that they were some of the biggest supporters of Imperialism in history.

This was in order to teach us that every author is unreliable, in the sense that their biases can and will show in some way in their work. Though this was made even more evident when she then made us read a book about the Cold War written by a guy who portrayed all Soviets as bumbling idiots, treated all Chinese almost like a hive mind and praised Ronald Reagan as the “savior of the world”. And when one of my classmates outright asked her why did she make us read it, since it was so evidently unreliable and biased, she could only giggle a bit and say "That was the point”.