I have two basic metaphysical convictions that drive my metaphysics. One is that there is no vagueness at the fundamental level. So anything there is vagueness about is non-fundamental.
The other is that humans are among the fundamental substances. We are not logical constructions out of other entities; we are not reducible to other entities; we are fundamental substances.
Together, these two convictions lead to various controversial things, especially since some people will think there is a tension between the two.