Love is a wondrous state, deep, tender, and rewarding. Because of its intimate and personal nature it is regarded by some as an improper topic for experimental research.

The disastrous effects of six or twelve months of social isolation were so devastating and debilitating that we had assumed initially that twelve months of isolation would not produce any additional decrement. This assumption proved to be false.

In our study of psychopathology, we began as sadists trying to produce abnormality. Today, we are psychiatrists trying to achieve normality and equanimity.

Contact comfort is a variable of overwhelming importance in the development of affectional responses, whereas lactation is a variable of negligible importance.

Selective breeding can alter man's capacity to learn, to keep sane, to cherish justice or to be happy. There is no more certain and economical a way to improve man's environment as to improve his nature.

-- Edward Thorndike

These results are consistent with the view that the questions asked subsequent to an event can cause a reconstruction in one's memory of that event.

-- Elizabeth Loftus

I have no patience with the hypothesis - often implied in tales meant to teach children to be good - that babies are born pretty much alike, and that the only agencies creating differences between boy and boy, or man and man, are steady application and moral effort.

-- Francis Galton