Fichte lectured on further versions of his "Wissenschaftslehre". Of these, he only published a brief work from 1810, "The Science of Knowledge in its General Outline" ("Die Wissenschaftslehre, in ihrem allgemeinen Umrisse dargestellt"; also translated as "Outline of the Doctrine of Knowledge"). His son published some of these thirty years after his death. Most only became public in the last decades of the twentieth century, in his collected works. This included reworked versions of the "Doctrine of Science" ("Wissenschaftslehre", 1810–1813), "The Science of Rights" ("Das System der Rechtslehre", 1812), and "The Science of Ethics as Based on the Science of Knowledge" ("Das System der Sittenlehre nach den Principien der Wissenschaftslehre", 1812; 1st ed. 1798).