As long as I’ve watched nearly 3 seasons of the Deep Space 9 series of Star-trek, I try to compare it with another series of Star-trek, The Next Generation. Although they both are classical science fictions working on a probe into the space (and human nature in fact), the source material of their storylines are exactly different.
TNG is a standard space exploring series. As it’s about a ship going around the space. It got a platform in freedom space for creative work of storyline. On the other hand, creative platform of DS9 is limited on a fixed Bajoran space station. The main thread is focused on the political issues between Bajor, Cadassia and the Federation. DS9 is quite strong to deal with topics about race conflict and politic but its science fiction smell is not so strong. I personally assume it as a politic story in a science fiction coat.
I still miss the kind of stories of TNG as a classical science fiction.
I would be true, for there are those who trust me;
I would be pure, for there are those who care;
I would be strong, for there is much to suffer;
I would be brave, for there is much to bear.
I would be friend to all, the friendless, the foe;
I would be giving, and forget the gift;
I would be humble, for I know my weakness;
I would look up to God, and laugh, and love, and lift.