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The key to understanding overpopulation is not population density but the numbers of people in an area relative to its resources and the capacity of the environment to sustain human activities; that is, to the area’s carrying capacity. When is an area overpopulated? When its population can’t be maintained without rapidly depleting nonrenewable resources.... By this standard, the entire planet and virtually every nation is already vastly overpopulated.

 

Paul R. Ehrlich

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Father thinks about the three races, yellow, black, and white. Orientals can contribute in the spiritual aspect, white people can contribute in the analytical, scientific area, while black people can contribute in the physical area-physical educational development of physical fitness, the area of health. That's one of the reasons Glenda Moody's project with black young people is very fantastic. From now on, two thirds of the athletes may come from black people. Even basketball teams have a dominant population of black people. The talented area of black people is in this physical aspect. So, the short cut for black peoples' achievement in this world is the physical area. So, Father has a special concern in this area.

 

Sun Myung Moon

 

The sheer weight of numbers of the human population, our habitations, our machinery and our ruthless exploitation of the living and organic resources of the earth; together these are changing our whole environment. This is what we call progress and much of this development is naturally to the direct and welcome benefit of mankind. However, we cannot at the same time ignore the awkward consequences and the most direct and menacing, but not the only consequence of this change, is pollution... Pollution is a direct outcome of man's ruthless exploitation of the earth's resources. Experience shows that the growth of successful organic populations is eventually balanced by the destruction of its own habitat. The vast man-made deserts show that the human population started this process long ago. There are two important differences today. In the first place the process has gone from a walking pace to a breakneck gallop. Secondly we know exactly what is happening. If not exactly in all cases, we know enough to appreciate what is happening and the need to take care... Pollution is no longer a matter of local incidents, today it has the whole biosphere in its grip. The processes which devastated the Welsh valleys a hundred years ago are now at work, over, on and under the earth and the oceans. Even if we bury all this waste underground there still remains the risk that toxic materials through chemical reactions will be washed out and into underground water courses. If ever there was an area of research more closely related to human welfare it is the problem of the safe disposal of waste and effluents... The fact is that we have got to make a choice between human prosperity on the one hand and the total well-being of the planet Earth on the other. Even then it is hardly a choice because if we only look for human prosperity we shall certainly destroy by pollution the earth and the human population which has existed on it for millions of years... If the world pollution situation is not critical at the moment it is as certain as anything can be that the situation will become increasingly intolerable within a very short time. The situation can be controlled and even reversed but it demands co-operation on a scale and intensity beyond anything achieved so far...I realise that there are any number of vital causes to be fought for, I sympathise with people who work up a passionate concern about the all too many examples of inhumanity, injustice, and unfairness, but behind all this hangs a really deadly cloud. Still largely unnoticed and unrecognised, the process of destroying our natural environment is gathering speed and momentum. If we fail to cope with this challenge, all the other problems will pale into insignificance.

 

Duke of Edinburgh Philip

 

We are beginning to realize that even the most fortunate people are living far below capacity, and that most human beings develop not more than a small fraction of their potential mental and spiritual efficiency. The human race, in fact, is surrounded by a large area of unrealized possibilities, a challenge to the spirit of exploration.

 

Julian Huxley

 

It shows you how a man [Reagan] of limited mental capacity simply doesn’t know what the Christ is going on in the foreign area.

 

Ronald Reagan

 

I am normally said to be free to the degree to which no man or body of men interferes with my activity. Political liberty in this sense is simply the area within which a man can act unobstructed by others. If I am prevented by others from doing what I could otherwise do, I am to that degree unfree; and if this area is contracted by other men beyond a certain minimum, I can be described as being coerced, or, it may be, enslaved. Coercion is not, however, a term that covers every form of inability. If I say that I am unable to jump more than ten feet in the air, or cannot read because I am blind, or cannot understand the darker pages of Hegel, it would be eccentric to say that I am to that degree enslaved or coerced. Coercion implies the deliberate interference of other human beings within the area in which I could otherwise act.

 

Isaiah Berlin