Also, I have just read this (as part of a book on insects, but it seems aposite here too):
"... In the search, the seeker will find that the feet will be led into many new places, the body encouraged to new forms of effort, and that, inevitably, the eyes will perceive many strange, fascinating, and unexpected things apart from the special objects of the search. The dividend of physical health and mental satisfaction to be derived from such endeavour is a thing enjoyed by all too few in this harassed world of today."
