Question: What's so bad about the philosophy of Immanuel Kant? In academic philosophy, Kant is often regarded as the culmination of the Enlightenment. According to this standard view, Kant sought to save reason from skeptics such as Hume, he aimed to ground ethics in reason, and he defended human autonomy and liberty. In contrast, Ayn Rand famously regarded Kant as "the most evil man in mankind's history." She rejected his metaphysics, epistemology, and ethics, saying that "the philosophy of Kant is a systematic rationalization of every major psychological vice." Who is right here? What's right or wrong with his philosophy?
Question: Are arguments of the form "what if everyone did that" valid or not? Often, people will claim that some action is wrong on the grounds that not everyone could or should act that way. For example: it’s wrong for a couple not to have children because if no one had children, civilization would collapse. Or: it’s wrong for you not to donate to charity for the poor because if no one donated, lots of innocent people would suffer. Or: it’s wrong for any doctor to limit his practice to concierge service because if every doctor did that, most people would not have access to medical care. What’s right or wrong with this kind of argument?