The content of the ideal is a desire to return to the perfection of an imaginary past.

History can predict nothing except that great changes in human relationships will never come about in the form in which they have been anticipated.

History is the interpretation of the significance that the past has for us.

Play is a uniquely adaptive act, not subordinate to some other adaptive act, but with a special function of its own in human experience.

The more the specific feelings of being under obligation range themselves under a supreme principle of human dependence the clearer and more fertile will be the realization of the concept, indispensable to all true culture, of service; from the service of God down to the simple social relationship as between employer and employee.

Culture requires in the first place a certain balance of material and spiritual values.

The content of the ideal is a desire to return to the perfection of an imaginary past.