I have a great deal of respect for Rand and her ideas, despite not agreeing with them. However, her status as an intellectual heir of Aristotle is highly debat

I have a great deal of respect for Rand and her ideas, despite not agreeing with them. However, her status as an intellectual heir of Aristotle is highly debatable. She's as much a disciple of Nietzsche as anyone. Meanwhile, metaphysics is a subject that stems directly from Greek philosophy: specifically the subjects addressed in Aristotle's work Metaphysics (literally "the book that came after Physics"). Spinoza's theory of monism is itself a metaphysical theory in this sense. Perhaps by metaphysics, you mean to certain metaphysical theories, such as the Idealism of the 18th century? edit: missing punctuation