One fairly easy to observe difference between modern “conservatives” and “liberals” is that the former are clearly dominated and motivated by fear, both the specific fear of losing their privilege, status and “way of life”, and the inchoate fear of modernity and change, while the latter either welcome such changes, are indifferent to them, or have learned to adapt to them, realizing that they’re inevitable.
Conservatives are basically emotional infantiles with a strong selfish streak who think it’s all about them, and simply don’t see others as equals, lacking empathy, and shape their policy views and political methods to suit their perceived needs and wants. They are that odious, insufferable, literal and humorous child no one liked in grade school, in adult bodies.
Scalia embodied this. His every utterance all but screamed “Me Me Me Me ME!!!”, and he OOZED desperation and fear, of non-Christians, non-whites, women, gays, furriners, liberals, free-thinkers–anyone who wasn’t like him and/or held different views and/or embraced modernity. He was a fossil who refused to go quietly to the museum display where he clearly belonged. Plus he was a selfish and rotten person. He was thus a typical modern “conservative”.
Stevens, OTOH, came across as a genial and happy man who was quite comfortable with himself and long ago adopted the manta “live and let live”, accepting the world as it was (well, the parts that couldn’t and needn’t be changed, at least) and focusing on real problems that needed to be addressed, like inequality and injustice, for which he reserved his ire and energy.
It’s not coincidental, I believe, that he outlived Scalia by decades. All other things being equal, being a happy and contended person adds years to one’s life. I suspect that this will prove true for Thomas and perhaps Kavs (just not till 2021, though, I hope, for obvious reasons). It’s for this reason that I suspect that Thomas will retire by next year.