Talk:Star Swirl the Bearded/@comment-25181275-20171018015502/@comment-53539-20171028145805

To me it was this; Twilight cast a spell to undo his work, therefore made a mistake and this left a bad impression on him. I imagine after studying magic for decades, his knowledge is vast and he is aware of the pros and cons of spells. So to treat magic lightly, especially his magic spell, would have looked bad and Twilight would have come off as both recess and stupid. In short, he has a lot of pride in himself and his work and Twilight essentially spat on it by accident.

It may not have been intentional, its just their first meeting is bad, yet the way Luna and Clestia act suggests that he wasn't always like this but we've just caught him on a bad day.