During The Earliest Stages The Child Perceives

Each Time One Prematurely Teaches A Child Something He Could Have Discovered Himself, That Child Is Kept From Inventing It And Consequently From Understanding It Completely.

Equilibrium Is The Profoundest Tendency Of All Human Activity.

Mixture Of Assimilation To Earlier Schemas And Adaptation To The Actual Conditions Of The Situation Is What Defines Motor Intelligence. But And This Is Where Rules Come Into Existence As Soon As A Balance Is Established Between Adaptation And Assimilation, The Course Of Conduct Adopted Becomes Crystallized And Ritualized. New Schemas Are Even Established Which The Child Looks For And Retains With Care, As Though They Were Obligatory Or Charged With Efficacy.

In Genetic Epistemology, As In Developmental Psychology, Too, There Is Never An Absolute Beginning.

It Was While Teaching Philosophy That I Saw How Easily One Can Say ... What One Wants To Say. ... In Fact, I Became Particularly Aware If The Dangers Of Speculation ... It's So Much Easier Than Digging Out The Facts. You Sit In Your Office And Build A System. But With My Training In Biology, I Felt This Kind Of Undertaking Precarious.