6 ideas
17503 | Theories can never represent accurately, because their components are abstract [Cartwright,N, by Portides] |
17402 | Mendeleev saw three principles in nature: matter, force and spirit (where the latter seems to be essence) [Mendeleev, by Scerri] |
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] |
2116 | The concept of an existing thing must contain more than the concept of a non-existing thing [Leibniz] |