"The reason that man's improved techniques seem to be necessary is that the natural balance has been so badly upset beforehand by those same techniques that the land has become dependent on them.
This line of reasoning not only applies to agriculture, but to other aspects of human society as well. Doctors and medecine become necessary when people create a sickly environment. Formal schooling has no intrinsic value, but becomes necessary when humanity creates a condition in which one must become 'educated' to get along."
-Masanobu Fukuoka