As long as man was small in numbers and limited in technology, he could realistically regard the earth as an infinite reservoir, an infinite source of inputs and an infinite cesspool for outputs. Today we can no longer make this assumption. Earth has become a space ship, not only in our imagination but also in the hard realities of the social, biological, and physical system in which man is enmeshed.
Kenneth E. BouldingTheories without facts may be barren, but facts without theories are meaningless.
Kenneth E. BouldingThe tourist business is a trap, it is a tained honey; Man clearly should have stayed in bed, and not invented money.
Kenneth E. BouldingKnowledge exists in minds, not in books. Before what has been found can be used by practitioners, someone must organize it, integrate it, extract the message.
Kenneth E. BouldingPhysicists can only talk to other physicists and economists to economists... sociologists often cannot even understand each other.
Kenneth E. Boulding