Not all these quotes are from writers. But they get the idea across. And, if you’re interested, there’s some further learning.
William Faulkner at the Nobel banquet in 1950
There is only the question: When will I be blown up? Because of this, the young man or woman writing today has forgotten the problems of the human heart in conflict with itself which alone can make good writing because only that is worth writing about, worth the agony and the sweat.
https://www.nobelprize.org/nobel_prizes/literature/laureates/1949/faulkner-speech.html
James Frey
The greatest rules of dramatic writing are conflict, conflict, conflict.
Margaret Heffernan
For good ideas and true innovation, you need human interaction, conflict, argument, debate.
Margaret Heffernan: Dare to disagree
Patrick Lencioni
I don’t think anyone ever gets completely used to conflict. If it’s not a little uncomfortable, then it’s not real.