Books like On the Shortness of Life
Seneca the Younger
On the Shortness of Life is 105 pages, about 1 hour 56 minutes at 250 words a minute.
12 books to read next
How long each takes
Meditations 3.7 h 
12 Rules for Life 8.8 h 
The Courage To Be Disliked 5.3 h 
The Four Agreements 2.8 h 
As a Man Thinketh 48 min 
Candide 2.8 h 
Los Cuatro Acuerdos 2.8 h 
Greenlights 5.6 h 
Freedom from the Known 2.4 h 
What I Know for Sure 4.3 h 
Self-help 7.1 h 
The Seven Lamps of Architecture 4.2 h Bar height shows length. Estimated at 250 words a minute.