"Miss Stacy took all us girls who are in our teens down to the brook last Wednesday, and talked to us about it. She said we couldn't be too careful what habits we formed and what ideals we acquired in our teens, because by the time we were twenty our characters would be developed and the foundation laid for our whole future life. And she said if the foundation was shaky we could never build anything really worth while on it. Diana and I talked the matter over coming home from school. We felt extremely solemn, Marilla. And we decided that we would try to be very careful indeed and form respectable habits and learn all we could and be as sensible as possible, so that by the time we were twenty our characters would be properly developed. It's perfectly appalling to think of being twenty, Marilla. It sounds so fearfully old and grown up."
"To think that this is my twentieth birthday, and that I've left my teens behind me forever," said Anne, who was curled up on the hearth-rug with Rusty in her lap, to Aunt Jamesina who was reading in her pet chair(...)
"I suppose you feel kind of, sorry" said Aunt Jamesina. "The teens are such a nice part of life. I'm glad I've never gone out of them myself."
"(...)Yes, I'm sorry, and a little dissatisfied as well. Miss Stacy told me long ago that by the time I was twenty my character would be formed, for good or evil. I don't feel that it's what it should be. It's full of flaws."
"So's everybody's," said Aunt Jamesina cheerfully. "Mine's cracked in a hundred places. Your Miss Stacy likely meant that when you are twenty your character would have got its permanent bent in one direction or 'tother, and would go on developing in that line. Don't worry over it, Anne. Do your duty by God and your neighbor and yourself, and have a good time. That's my philosophy and it's always worked pretty well."