I'm glad they got caught. That will 'teach them a lesson'! [=they will learn that they should not do that again]
We 'learned our lesson' the hard way. [=we learned from an unpleasant experience]
They studied the 'lessons' [='teachings'] of the great philosophers.
(..) It's precisely what kept you from greatness. Arrogance and fear still keep you from learning the simplest and most significant lesson of all. Which is? It's not about you. When you first came to me, you asked me how I was able to heal Jonathan Pangborn. (..)2016 Doctor Strange
(..) Do you ever laugh? Come on, just give me the book. No. Once, in this room, you begged me to let you learn. Now, I'm told you question every lesson, preferring to teach yourself. Once, in this room, you told me to open my eye. Now I'm being told to blindly accept rules that make no sense. (..)2016 Doctor Strange