Reality, in its quantitative aspect, must be considered as a system of populations... The general study of the equilibria and dynamics of populations seems to have no name; but as it has probably reached its highest development in the biological study known as 'ecology,' this name may well be given to it.

[Peace praxis is] a peace process that deals with conflict integratively.

One reason why the progressive state is 'cheerful' is that social conflict is diminished by it.

We are born to love, as we are born to breathe and eat and drink.

Theories without facts may be barren, but facts without theories are meaningless.

At the opposite pole from the gift is tribute - that is, a grant made out of fear and under threat. A threat is a statement of the form "you do something that I want or I will do something that you do not want.

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