From Jim Starlin's 1975 on Warlock.
There's an essay in Douglas Wolk's 'Reading Comics: Graphic Novels and What They Mean' called 'The Dark Mirrors of Jim Starlin's Warlock' that provides a fantastic analysis of this very unique comics collection. In Wolk's words:
'The Warlock serial that Jim Starlin wrote and drew between 1974 and 1977 is a crazily dense, heady, philosophy-minded space opera that includes some of the oddest and most dazzling mainstream comic books of their era.'
Wolk on the function of Warlock: 'Mostly, though, Starlin used Warlock as a vehicle for playing with various kinds of dichotomies and dialectics. There are a lot of neatly two-sided conflicts going on in the series--life versus death, order versus chaos, free will versus predestination, and so on--and the characters are only too happy to discuss their respective ideologies, even in the middle of a fight.'
In the particular panel I've posted, Thanos displays a bit of existential Manichaeism whilst blasting hand-beamy things at the afro'd Magus.
Lots more at Out Of Sequence. Please take a look.