Women in Love - The Formula to Understand all People

Lawrence has this irritating method of writing passages that are wonderfully constructed, sound neat and eloquent and give the impression of lexical density so that I come away feeling I have just read something quite insightful but for the life of me can't piece it together and extract that all-important meaning.  The following lines are a conversation between two characters and presents the argument that all people are fundamentally identical because they, we, are all governed by the same principles.  It even specifies 'two great ideas' but neglects to go any further.  I don't know whether I'm missing something or perhaps am meant to apply my own definitions to this framework of thought but feel obliged to record it as something to ponder over - any help welcome:

The motor-car ran on, the afternoon was soft and dim. She talked with lively interest, analysing people and their motives-Gudrun, Gerald. He answered vaguely. He was not very much interested any more in personalities and in people-people were all different, but they were all enclosed nowadays in a definite limitation, he said; there were only about two great ideas, two great streams of activity remaining, with various forms of reaction therefrom. The reactions were all varied in various people, but they followed a few great laws, and intrinsically there was no difference. They acted and reacted involuntarily according to a few great laws, and once the laws, the great principles, were known, people were no longer mystically interesting. They were all essentially alike, the differences were only variations on a theme. None of them transcended the given terms. 

Ursula did not agree-people were still an adventure to her-but-perhaps not as much as she tried to persuade herself. Perhaps there was something mechanical, now, in her interest. Perhaps also her interest was destructive, her analysing was a real tearing to pieces. There was an under-space in her where she did not care for people and their idiosyncracies, even to destroy them. -p.265