The idea of copyright did not exist in ancient times, when authors frequently copied other authors at length in works of non-fiction. This practice was useful, and is the only way many authors' works have survived even in part.
-- Richard Stallman
   
Richard Stallman   Name:
Richard Stallman
Type:
Scientist
Nationality:
none
Birth:
March 16, 1953
https://www.nutquote.com/quote/Richard_Stallman