This quote is from a character in the book, The Salt Garden by Cindy Martinusen.
"I realize how the novelist, the wordsmith, has kept my words inside me. How easily they get tangled in the folds of stories and never make it to my own lips. Almost every story I've worked on in the last twenty years has in some way included Ben or my feelings for him. But in the realm of the real, I find these emotions impossible to express."
I find that's true of myself. Give me enough time to think, and I can say or write something witty or profound, but don't expect eloquence from me in person.