Many of these have already been listed in the previous answer, but I am going to include a more extensive list, in order, with page numbers from the 1997 version of the text.
An aphorism is a statement of truth or opinion expressed in a concise and witty manner. Morrie’s belief in aphorisms was an important part of his character. He would write them on little Post-It notes, and the aphorisms help to contribute to Morrie as an inspirational figure in the book. Although he is dying, he not only seems to have accepted his lot in life, but he also teaches life lessons with his aphorisms to help others. Tuesday With Morrie’s author, Mitch Albom, seemed to learn a lot from the Tuesdays he spent with Morrie, who was once his college professor. In return, as readers, we learn a lot as well.
“Accept what you are able to do and what you are not able to do.” (18)
“Accept the past as past, without denying it or discarding it.” (18)
“Learn to forgive yourself and to forgive others.” (18)
(The entire section contains 2 answers and 927 words.)