In the book the outsiders what does the first sentence mean of chapter 1

Im back macdoolittle to get you in first place on the leaderboard

Ivansanger rainsfordgeneral zaroffwhitneyadventurous hunter; calm and composed; considers himself a realist; new yorker; veteran of world war ia hunter; sympathetic to the plight of voiceless, defenseless animals; cautiouscossack; mute; formidable physical stature; wears a black uniform; used to whip prisoners for the great white czarcossack; aristocrat; has sharp, pointed teeth and red lips; devoid of humanity and emotion

Describe, in your own words why you think jean-jacques rousseau decided to write confessions. your answer should be at least one hundred words.