It is a mistake to think that we can control the breeding of mankind in the long run by an appeal to conscience.

It is a mistake to think that we can control the breeding of mankind in the long run by an appeal to conscience.

Moreover, the practical recommendations deduced from ecological principles threaten the vested interests of commerce; it is hardly surprising that the financial and political power created by these investments should be used sometimes to suppress environmental impact studies.

In a competitive world of limited resources, total freedom of individual action is intolerable

Incommensurables cannot be compared.

The only kind of coercion I recommend is mutual coercion, mutually agreed upon by the majority of the people affected.

A technical solution may be defined as one that requires a change only in the techniques of the natural sciences, demanding little or nothing in the way of change in human values or ideas of morality.