“"I've got a sort of idea," said Pooh at last, "but I don't suppose it's a very good one."
"I don't suppose it is either," said Eeyore.”
Source: The House at Pooh Corner (1928), Chapter Six.
Help us to complete the source, original and additional information
A.A. Milne 169
British author 1882–1956Related quotes
“I know a very good reason,' said Ainsley, 'but I don't know a very good excuse.”

The News Quiz, BBC Radio 4, October 1998 (rebroadcast on BBC 7, 13 June 2006)

“I was just talking with friends and they said it was good idea and I just sort of liked the idea.”
AP via CBS News https://web.archive.org/web/20150906180820/https://www.cbsnews.com/news/prince-faces-press/
Associated Press interview during his gap year (29 September 2000)