To Understand Is To Invent.

It Is With Children That We Have The Best Chance Of Studying The Development Of Logical Knowledge, Mathematical Knowledge, Physical Knowledge, And So Forth.

Accommodation Of Mental Structures To Reality Implies The Existence Of Assimilatory Schemata Apart From Which Any Structure Would Be Impossible.

For The Fundamental Fact Of Human Psychology Is That Society, Instead Of Remaining Almost Entirely Inside The Individual Organism As In The Case Of Animals Prompted By Their Instincts, Becomes Crystallized Almost Entirely Outside The Individuals. In Other Words, Social Rules, As Durkheim Has So Powerfully Shown, Whether They Be Linguistic, Moral, Religious, Or Legal, Etc., Cannot Be Constituted, Transmitted Or Preserved By Means Of An Internal Biological Heredity, But Only Through The External Pressure Exercised By Individuals Upon Each Other.

Punishment Renders Autonomy Of Conscience Impossible.

To Understand Is To Invent.