Author's Notes:

Letter 45: Here.

To my faithful student, Twilight Sparkle,

I admit Twilight, normally I would give affirming advice about the lesson you learned and if needed suggestions to further your learning, but this is just so... you that I cannot offer any further input. You are, at times, utterly adorable Twilight.

Your loving mentor,
Princess Celestia

PS. I am perhaps surprised you weren't giving out sundials instead.