This article is from the Naturism FAQ, by Dennis Kirkpatrick firstname.lastname@example.org with numerous contributions by others.
There are probably as many answers to this question as there are
naturists. One common definition is the one suggested by the
International Naturist Federation in 1974:
"Naturism is a way of life in harmony with nature characterized by the
practice of communal nudity, with the intention of encouraging self-
respect, respect for others and for the environment."
(It should be pointed out that naturism does not necessarily have to
be enjoyed in a "communal" fashion. Many naturists enjoy being nude by
themselves, or just with their SO's, or in numbers that aren't really
"communal". Of course, there is nothing at all wrong with this.)
The main tenets of naturism are: