“From the history of nature and human society that the laws of dialectics are abstracted. For they are nothing but the most general laws of these two aspects of historical development, as well as of thought itself. And indeed they can be reduced in the main to three:
- The law of the transformation of quantity into quality and vice versa;
- The law of the interpenetration of opposites;
- The law of the negation of the negation.
All three are developed by Hegel in his idealist fashion as mere laws of thought.”
-Engels’ Dialectics of Nature.
