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.

The only thing I care about is whether the monkeys will turn out a property I can publish. I don't have any love for them. Never have. I really don't like animals.

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.

-- Harry Harlow

The work that we have done at McGill University began, actually, with the problem of brainwashing. We were not permitted to say so in the first publishing.

-- Donald O. Hebb

The brain functions on its own; we know that without sensory input it produces something which we call dreams or hallucinations.

-- Donald O. Hebb