I think that was Abraham Lincoln.
[ quick visit to Google ]
Nope. It was Hemingway. From the short story, “The Short Happy Life of Francis Macomber.”
“Doesn’t do to talk too much about all this. Talk the whole thing away. No pleasure in anything if you mouth it up too much.”
Not that I’ve actually read that, but I heard it somewhere along the way.
It suits me.
There’s apparently a neurological component to this one, too. Tell someone you’re going to do something wonderful, and you get a dopamine hit–as though you already did it.
Which I haven’t.
So I won’t.