Perhaps the most difficult ethical problem of the scientific community arises not so much from conflict with other subcultures as from its own succes… - Kenneth E. Boulding

Nothing fails like success because we don't learn from it. We learn only from failure.

There is something, however humble, which can properly be called skill among those who recognise themselves as economists.

In the imagination of those who are sensitive to the realities of our era, the earth has become a space ship, and this, perhaps, is the most important single fact of our day. For millennia, the earth in men's minds was flat and illimitable. Today, as a result of exploration, speed, and the explosion of scientific knowledge, earth has become a tiny sphere, closed, limited, crowded, and hurtling through space to unknown destinations. This change in man's image of his home affects his behaviour in many ways, and is likely to affect it much more in the future.

The concept of need is often looked upon rather unfavorably by economists, in contrast with the concept of demand. Both, however, have their own strengths and weaknesses. The need concept is criticized as being too mechanical, as denying the autonomy and individuality of the human person, and as implying that the human being is a machine which "needs" fuel in the shape of food, engine dope in the shape of medicine, and spare parts provided by the surgeon.