Full Idea
Feeling is the ornamentation of emotion, not its essence. ...For example, what is the difference in feeling between embarrassment and shame? …We may also experience an emotion like subdued anger or envy with no feeling.
Gist of Idea
Feeling is a superficial aspect of emotion, and may be indeterminate, or even absent
Source
Robert C. Solomon (The Passions [1976], 4.2)
Book Reference
Solomon,Robert C.: 'The Passions (1993 ed)' [Hackett 1993], p.97
A Reaction
This is very persuasive, and supports the idea that what matters in an emotion is its content, rather than its phenomenology. He adds later that we are often mistaken about our own emotions.