What did Adam Smith think about human rights?

Nothing. Smith believed that all morality was about what he called "sentiments" [feelings]. His main book devoted to morality was Theory of Moral Sentiments. read more

And, furthermore, Human Rights Theory was developed via "Universal Natural Law Theory." At the end of The Wealth of Nations (one might add) he maintained that people should not pay much attention (when thinking of values) to anything beyond short-term and narrow-breadth feelings and intersts. read more

Political Philosophy Part 1: Adam Smith Week 5 Enlightenment views on ‘human nature’: Adam Smith 1723 – 1790, and the British and Scottish Enlightenments. read more