To this day, I enjoy nature, the luxury of undisturbed wilderness, forests, mountains, lakes, rivers and deserts and their wildlife. But I also know that the greatest danger to their perpetuity is the pressure of human population.

There can be no permanent progress in the battle against hunger until the agencies that fight for increased food production and those that fight for population control unite in a common effort.

Without food, man at most can live but a few weeks; without it all other components of social justice are meaningless.

Yet food is something that is taken for granted by most world leaders despite the fact that more than half of the population of the world is hungry.

The destiny of world civilization depends upon providing a decent standard of living for all mankind.

We are 6.6 billion people now. We can only feed 4 billion. I don't see 2 billion volunteers to disappear.

Plant diseases, drought, desolation, despair were recurrent catastrophes during the ages - and the ancient remedies: supplications to supernatural spirits or gods.