“The lecture was interesting, but it was much too long.” “'My sentiments exactly!'” [=I agree with you completely]
A good politician understands public 'sentiment'. [=understands the opinions held by many or most people]
His criticism of the court's decision expresses a 'sentiment' that is shared by many people.
(..) - You and that girl... - Why not? Impossible! You're in the fashion world. We're cold, artificial and without sentiment. - How can you be in love? - I'm a black sheep. What about my collection? Without her I cannot show it. - The gowns were sewn on her! (..)1957 Funny Face