9 ideas
| 21796 | Man is God if he raises himself, by denying his nature and finitude [Hegel] |
| 21783 | State slavery is a phase of education, moving towards a full culture [Hegel] |
| 21784 | Slavery is unjust, because humanity is essentially free [Hegel] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 17402 | Mendeleev saw three principles in nature: matter, force and spirit (where the latter seems to be essence) [Mendeleev, by Scerri] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
| 17399 | Elements don't survive in compounds, but the 'substance' of the element does [Mendeleev] |
| 17400 | Mendeleev focused on abstract elements, not simple substances, so he got to their essence [Mendeleev, by Scerri] |
| 17401 | Mendeleev had a view of elements which allowed him to overlook some conflicting observations [Mendeleev] |