Here Diderot talks about how young and unexperienced actors can become lost in the passion of the work, and often be very over the top or bombastic in their acting. Although I don't think this is entirely true for every young actor, I do agree that when you are young and first beginning you feel the need to show the audience the exactitude of how deep you are "feeling" on stage. This often looks ridiculous and not realistic at all. It's funny to me that this happened in this time period, and not just on bad teen drama's of today's television.