I don’t know the title or author; it was a children’s book for preschoolers that was read to me more than 80 years ago. One of the characters was a wise old owl who sat in a tree, saying, “I am thinking important thoughts I didn’t have time to think yesterday.” this line has been quoted in my family ever since to anyone who was staring into space, daydreaming.  I have long wondered what the book was.  Thanks for any help you can provide.