The Most Certain Sign Of Wisdom Is

So It Is With Minds. Unless You Keep Them Busy With Some Definite Subject That Will Bridle And Control Them, They Throw Themselves In Disorder Hither And Yon In The Vague Field Of Imagination... And There Is No Mad Or Idle Fancy That They Do Not Bring Forth In The Agitation.

Almost All The Opinions We Have Are Taken On Authority And On Credit.

The Pleasantest Things In The World Are Pleasant Thoughts, And The Great Art Of Life Is To Have As Many Of Them As Possible.

It Is A Disaster That Wisdom Forbids You To Be Satisfied With Yourself And Always Sends You Away Dissatisfied And Fearful, Whereas Stubbornness And Foolhardiness Fill Their Hosts With Joy And Assurance.

Socrates ... Brought Human Wisdom Back Down From Heaven, Where She Was Wasting Her Time, And Restored Her To Man.... It Is Impossible To Go Back Further And Lower. He Did A Great Favor To Human Nature By Showing How Much It Can Do By Itself.