The Duty Of Man Is

When The Land Is Cultivated Entirely By The Spade And No Horses Are Kept, A Cow Is Kept For Every Three Acres Of Land.

Such Are The Differences Among Human Beings In Their Sources Of Pleasure, Their Susceptibilities Of Pain, And The Operation On Them Of Different Physical And Moral Agencies, That Unless There Is A Corresponding Diversity In Their Modes Of Life, They Neither Obtain Their Fair Share Of Happiness, Nor Grow Up To The Mental, Moral, And Aesthetic Stature Of Which Their Nature Is Capable.

The Fatal Tendency Of Mankind To Leave Off Thinking About A Thing When It Is No Longer Doubtful Is The Cause Of Half Their Errors.

Even If The Received Opinion Be Not Only True, But The Whole Truth; Unless It Is Suffered To Be, And Actually Is, Vigorously And Earnestly Contested, It Will, By Most Of Those Who Receive It, Be Held In The Manner Of A Prejudice, With Little Comprehension Or Feeling Of Its Rational Grounds

All Errors Which A Man Is Likely To Commit Against Advice Are Far Outweighed By The Evil Of Allowing Others To Constrain Him For His Good.