A Mathematician Is Only Perfect Insofar As

Correction Does Much, But Encouragement Does More. Encouragement After Censure Is As The Sun After A Shower.

Ingratitude Is Always A Kind Of Weakness. I Have Never Known Men Of Ability To Be Ungrateful.

We Should Treat Children As God Does Us, Who Makes Us Happiest When He Leaves Us Under The Influence Of Innocent Delusions.

If You Start To Think Of Your Physical And Moral Condition, You Usually Find That You Are Sick.

There Are People Who Pay Attention To The Weaknesses Of Their Friends; That Is To No Avail. I Have Always Closely Watched And Profited From The Strengths Of My Adversaries.