The Sith bends the Force to its will rather than flowing with the force.
I think it would help greatlγ if you actually explained what that means.
"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill
"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier
"Apathy is death." -Kreia