A professor that I have been emailing for advice on graduate school offered to read one of my works for applications (specifically my statement of purpose), and he offered some suggestions using a commenting system on my paper. In the email back to me, he gave some general improvements on things that I could say, but he also crafted a few sentences that would get some of the points across by using quotes.
For example, the email would say something like "You could say something like 'sentence that is applicable to my SOP' to convey your interest in this topic."
Can I use his quoted sentences in my SOP? Was his intention in providing them so that I could directly use them if I chose to?