The way to do fieldwork is never to come up for air until it is all over.

The United States has the power to destroy the world, but not the power to save it alone.

Throughout history females have picked providers. Males have picked anything.

The solution to adult problems tomorrow depends on large measure upon how our children grow up today.

Useful undertakings which require sustained attention and vigorous precision in order to succeed often end up by being abandoned, for, in America, as elsewhere…

Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.

I seldom think of politics more than 18 hours a day.