Mind as immaterial substance, part 3

I continue this series of quotes with the following:

“Thus, the thesis that minds are substances implies that minds are objects, or things, in their own right; in this respect, they are like material objects - it’s only that . . . they are immaterial [Italics added] objects. They have properties and engage in activities of various sorts, like thinking, sensing, judging, and willing. Most important, they are capable of independent existence. . . . minds and bodies are in causal interaction with each other [as I have shared in my books and blog posts, presenting a mechanism by which this occurs].”

Stan Lennard