The correct answer to this open question is the following.
The main differences between the editorialist from the Chicago Times and President Lincoln on the purpose of the Civil War were the following.
The United States President Abraham Lincoln referred to the purpose of the Civil War in his famous Gettysburg speech, delivered on November 19, 1863.
He was in a ceremony in the National Cemetery located in Pennsylvania when he paid tribute to the American soldiers that had died in the war. And exhorted the people to follow the principles of liberty and justice that characterized the United States.
On the other hand, the editorial published in the Chicago Times criticized Lincoln and his message. The editorial published was: "The cheeks of American people must tingle with shame as he reads the silly, flat, and dishwatery utterances."
The editorialists expressed that Lincoln's message was not a good one and out of context.