1st Kislev 5783 on the occasion of the commemorative anniversary of Isaac Orobio ז"ל , classical Sephardic metaphysician, professor of medicine in Toulouse, King’s Counsellor to Louis XIV at Saint-Jean-de-Luz. We pay tribute to him with all our love for his work, in particular, the original print of Certamen Philosophicum (Philosophical Case in Defense of Divine and Natural Truth, Shehakol, 2020) discovered in Leibniz' library in Hanover.