“I do not know the American gentleman, god forgive me for putting two such words together.”

Simplified Meaning:

The quote talks about how the speaker finds it hard to believe that a true gentleman exists in America, almost as if the idea of an 'American gentleman' feels strange or impossible to imagine. Think about someone you know who always says that they can't trust used car salesmen because they think all of them are dishonest. They feel so strongly about it that if you put the words "honest" and "used car salesman" together, they'd be shocked and might laugh at the idea, because it goes against what they believe. In this case, the person talking in the quote has a hard time thinking that someone from America can be truly polite, refined, and respectful in the way a 'gentleman' should be. This might be due to stereotypes or past experiences they've had which made them believe that American manners aren't as formal or courteous. However, it's important for people to keep an open mind and not let their expectations or biases limit how they see others. So, the lesson here could be to avoid judging an entire group of people based on preconceived notions, and to recognize that there are always exceptions to stereotypes.