I also assume that they are not simply the physical properties of things as now conceived by physical science. Instead, they are ecological, in the sense that they are properties of the environment relative to an animal.
-- James J. Gibson
   
James J. Gibson   Name:
James J. Gibson
Type:
Psychologist
Nationality:
American
Birth:
January 27, 1904
Death:
December 11, 1979
https://www.nutquote.com/quote/James_J._Gibson