What is your favorite Adventure Time quote?

I'm working on a zine "The Little book of Adventure Time Advice". Adventure Time always amazed me with it's life advice and little lessons. I've decided to put some of my favorite quotes together in a zine.

The zine only has 6 pages, a front and a back cover. Space is limited and as I started working on it I realized that I might not even have some of the best quotes.

If you have a favorite quote from Adventure Time, please share it. Doesn't have to be advice per se, but just any quote that you immediately think of when thinking of Adventure Time. Thanks for your help.