What's insubstantial about Lacan? There seems to be enough in there to give D&G, Zizek etc careers (as well as inspire a bunch of compelling media i.e. The Matrix)
All great things, but helping other philosophers have careers and inspiring cool art does not necessarily imply that you yourself had substantial philosophical concepts.
All great things, but helping other philosophers have careers and inspiring cool art does not necessarily imply that you yourself had substantial philosophical concepts.