"Early psychology was based on the study of the individual; early sociology was based on the study of society. But there is no such thing as the "individual," there is no such thing as "society"; there is only the group and the group-unit — the social individual. Social psychology must begin with an intensive study of the group, of the selective processes which go on within it, the differentiated reactions, the likenesses and unlikenesses, and the spiritual energy which unites them."

“Group organization is to be the new method in politics, the basis of our future industrial system, the foundation of international order. Group organization will create the new world we are now blindly feeling after, for creative force comes from the group, creative power is evolved through the activity of the group life.”

“Democracy is a great spiritual force evolving itself from men, utilizing each, completing his incompleteness by weaving together all in the many-membered community life which is the true Theophany. The world today is growing more spiritual, and I say this not in spite of the Great War, but because of all this war has shown us of the inner forces bursting forth in fuller and fuller expression.”

“We see now that the process of the many becoming one is not a metaphysical or mystical idea; psychological analysis shows us how we can at the same moment be the self and the other, it shows how we can be forever apart and forever united. It is by the group process that the transfiguration of the external into the spiritual takes place, that is, that what seems a series becomes a whole. The essence of society is difference, related difference. "Give me your difference" is the cry of society to-day to every man.”

“The group process contains the secret of collective life, it is the key to democracy, it is the master lesson for every individual to learn, it is our chief hope or the political, the social, the international life of the future.”

“As the psychic coherence of the group can be obtained only by the full contribution of every member, so we see that a readiness to compromise must be no part of the individual's attitude. Just so far as people think that the basis of working together is compromise or concession, just so far they do not understand the first principles of working together.”

“Man can have no rights apart from society or independent of society or against society.”