Alan Alexander Milne:
(Kilburn (London), 18 January 1882 – Hartfield, 31 January 1956).
British author, best known for his creation Winnie-the-Pooh.

The end of the summer is not the end of the world. Here’s to October.

“The end of the summer is not the end of the world” is a humorous reminder not to treat seasonal change—or any pleasant period ending—as a disaster. “Here’s to October” is a toast welcoming autumn and appreciating what comes next rather than mourning what has passed.
✍️ Author and origin:
It is by A. A. Milne, best known for ‘Winnie-the-Pooh’. It appears in his essay “A Word for Autumn,” collected in “Not That It Matters” (1919).
The fuller sentence is:
> “The end of the summer is not the end of the world. Here’s to October, and—waiter, another glass of beer.”
The shortened version commonly shared online leaves out the comic ending. It is ‘not a quotation from Winnie-the-Pooh or spoken by Pooh’; it comes from Milne’s adult humorous essays and predates “Winnie-the-Pooh” (1926).