Michael Esfeld (Lausanne) gives a talk at the MCMP Colloquium (26 November, 2014) titled "The Primitive Ontology of Quantum Physics". Abstract: In this talk, I will first recall the arguments why we need what is known as a primitive ontology of quantum physics and then argue that this ontology consists in primitive stuff that is structurally individuated through metrical relations (but without a commitment to absolute space). Against this background, the only reason to admit physical properties then is that they play a causal role for the temporal development of the primitive stuff. I will sketch out two metaphysical views of these properties, namely Humeanism and dispositionalism.