5 ideas
16719 | The primary qualities are mixed to cause secondary qualities [Burley] |
4871 | A thing is free if it acts only by the necessity of its own nature [Spinoza] |
21991 | The middle class gain freedom through property, but workers can only free all of humanity [Marx, by Singer] |
21990 | Theory is as much a part of a revolution as material force is [Marx] |
7128 | Religion is the opium of the people, and real happiness requires its abolition [Marx] |