The melancholic philosopher, such as Baudrillard or Milton, will generate an existential paradise that is somehow inaccessible, reflecting their inability to access happiness. The giddy spirit, Deleuze-Guattari, will announce an alternate coding allowing for merging, newness and escape; lines of flight for the hopeful.
Schopenhauer is a curmudgeon, Kierkegaard a hopeless romantic, and Camus a poetic, passionate cynical humanist. Plato fawns over power, and Socrates undermines authority.
Their way of life was their rebuttal in words.
And let’s not forget, the resonance of their message is amplified by their background: time and place are amplifiers for disposition.