"It is quite remarkable, when you think of it, that if you tell 
somebody to buy something and dump it on or squirt it on, he will
almost certainly do it, after a fashion. 
But if you suggest that he observe something or think about something
or learn about something, he almost certainly will not.  Yet those 
gardens we admire are never the results of dumping or squirting:
they are always the result of muddling things about in the brain 
and the eye."

-- from _The Essential Earthman_, by Henry Mitchell