When to say, "My Sentiments Exactly."

There are many ways to say, "I agree with  you." But here's one you may not have heard:  

My sentiments exactly. "My sentiments  exactly" means "I completely agree with  

you." A sentiment is a feeling, opinion, or  attitude, so the expression "my sentiments  

exactly" means your feelings on the matter and  my feelings on the matter are exactly the same.  

For example, you say, "There are no shortcuts to  real success." I say, "My sentiments exactly."  

You say, "Learning the grammar of a  new language is very important." I say,  

"My sentiments exactly." I think short  language clips aren't full lessons,  

but they're still useful. Will you  agree with me? My sentiments exactly.