Freedom in a commons brings ruin to all.
The optimum population is, then, less than the maximum.
Economists (and others) who are satisfied with nature-free equations develop a dangerous hubris about the potency of our species
In a competitive world of limited resources, total freedom of individual action is intolerable
There is nothing more dangerous than a shallow thinking compassionate person
However, I think the major opposition to ecology has deeper roots than mere economics; ecology threatens widely held values so fundamental that they must be called religious.