Robots' Ethical Systems: From Asimov’s Laws to Principlism, from Assistive Robots to Self-driving Cars -- Robot: Multi-use Tool and Ethical Agent -- Towards Human--Robot Interaction Ethics -- Shall I Show You Some Other Shirts Too? The Psychology and Ethics of Persuasive Robots -- Ethical Regulation of Robots Must Be Embedded in Their Operating Systems -- Non-monotonic Resolution of Conflicts for Ethical Reasoning -- Grafting Norms onto the BDI Agent Model -- Constrained Incrementalist Moral Decision Making for a Biologically Inspired Cognitive Architecture -- Case-Supported Principle-Based Behavior Paradigm -- The Potential of Logic Programming as a Computational Tool to Model Morality.