The economy of the future might be called the "spaceman economy," in which the earth has become a single spaceship, without unlimited reservoirs of anything.
Kenneth E. Boulding[The notion of equilibrium] is a notion which can be employed usefully in varying degrees of looseness. It is an absolutely indispensable part of the toolbag of the economist and one which he can often contribute usefully to other sciences which are occasionally apt to get lost in the trackless exfoliations of purely dynamic systems.
Kenneth E. BouldingThe love of God again makes us free, for it draws us to set a low value on those things wherein we are subject to others - our wealth, our position, our reputation, and our life - and to set a high value on those things which no man can take from us - our integrity, our righteousness, our love for all men, and our communion with God.
Kenneth E. Boulding