Is it made with Liffey water? - Prince Philip, Duke of Edinburgh

If it has four legs and is not a chair, has wings and is not an aeroplane, or swims and is not a submarine, the Cantonese will eat it.

For example, the World Health Organization Project, designed to eradicate malaria from Sri Lanka in the postwar years, achieved its purpose. But the problem today is that Sri Lanka must feed three times as many mouths, find three times as many jobs, provide three times the housing, energy, schools, hospitals and land for settlement in order to maintain the same standards. Little wonder the natural environment and wildlife in Sri Lanka has suffered. The fact [is] ... that the best-intentioned aid programs are at least partially responsible for the problems.
The industrial revolution sparked the scientific revolution and brought in its wake better public hygiene, better medical care and yet more efficient agriculture. The consequence was a population explosion which still continues today.
The sad fact is that, instead of the same number of people being very much better off, more than twice as many people are just as badly off as they were before. Unfortunately all this well-intentioned development has resulted in an ecological disaster of immense proportions.

So long as they [birth control methods] ... remained taboo subjects the chances of making any impression on the human population explosion were that much more remote.
In the introduction to the IUCN Red Data Books which list all animals and plants under threat of extinction, it says that virtually everywhere the major threat to a wild species is loss of habitat to a rapidly increasing human population requiring more space in order to build villages and cities and grow more food. But starvation and poverty cannot be eradicated solely by increased food and resources at the expense of what remains of the natural world. Any increase in the provision of food and resources must be accompanied by a drastic reduction in the rate of increase in the human population.