Old unicorn cartoon movie
I'm almost 17 years old. I remember watching a movie when I was somewhere between 3-6 years old about a unicorn and a gargoyle (?).
The unicorn starts at a young age and progresses in age, if I remember correctly. It was very sad and lonely. I think maybe its horn broke at some point, but I'm not sure.
Additionally, it attempts to befriend a gargoyle or devil or something of that sort. I can remember that the gargoyle kept telling the unicorn to leave it alone because he wanted to live in "solitude" (this scene stuck out simply because I remember them explaining what "solitude" meant and that of course wa a big word for such a young child).
I know my description isn't great, but all of the sudden I started remembering this movie and I was hoping someone could let me know what movie this is. Thanks!