Numerous well known, as well as a few lesser known, people have expressed the thought that making things brief demands extra effort. According to my favorite trusted source for items of this source, the Quote Investigator, Blaise Pascal was the first. He of course wrote in French, but the translation is:
I would have written a shorter letter, but I did not have the time.Pouring more and more words, and perhaps even more and more thoughts, onto the page (or screen) is easy. Editing those words into a coherent thought takes time.