When People Are Old Enough To Know

[d]on't Grow Old. With Age Comes Caution, Which Is Another Name For Cowardice.... Whatever Else You Do In Life, Don't Cultivate A Conscience. Without A Conscience A Man May Never Be Said To Grow Old. This Is An Age Of Very Old Young Men.

When People Are Old Enough To Know Better They Are Old Enough To Do Worse.

Never Neglect An Opportunity To Play Leap-frog; It Is The Best Of All Games, And, Unlike The Terribly Serious And Conscientious Pastimes Of Modern Youth, Will Never Become Professionalized.

An Author Should Be Delighted, Not Annoyed When He Hears Himself Persistently Misquoted. He Could Receive No Higher Compliment. It Proves That The World Has Frequent And Urgent Need Of His Thoughts And Will Rather Change The Manner In Which He Expresses Them Than Do Without The Things Expressed.

I Am Inclined To Think That One's Education Has Been In Vain If One Fails To Learn That Most Schoolmasters Are Idiots.