The biggest obstacle was ...

The biggest obstacle was mixing abortion with overpopulation. These are two things that have nothing to do with each other.
 Jacques Yves Cousteau

Quotes from the same author

Mankind has probably done more damage to the Earth in the 20th century than in all of previous human history.
 Jacques Yves Cousteau
The real cure for our environmental problems is to understand that our job is to salvage Mother Nature. We are facing a formidable enemy in this field. It is the hunters... and to convince them to leave their guns on the wall is going to be very difficult.
 Jacques Yves Cousteau
The United Nation's goal is to reduce population selectively by encouraging abortion, forced sterilization, and control of human reproduction, and regards two-thirds of the human population as excess baggage, with 350,000 people to be eliminated per day.
 Jacques Yves Cousteau
It is certain that the study of human psychology, if it were undertaken exclusively in prisons, would also lead to misrepresentation and absurd generalizations.
 Jacques Yves Cousteau
We are living in an interminable succession of absurdities imposed by the myopic logic of short-term thinking.
 Jacques Yves Cousteau