Books like World Ethics
Wanda Torres Gregory
World Ethics is 392 pages, about 7 hours 11 minutes at 250 words a minute.
7 books to read next
How long each takes
The Ethics 4.9 h 
The Critique of Practical Reason 4.6 h 
Ethics 8.9 h 
A Letter Concerning Toleration 2.3 h 
Ethics for the New Millennium 4.7 h 
Evolution and Ethics 6.1 h 
Lesbian Ethics 6.8 h Bar height shows length. Estimated at 250 words a minute.