It Is By Logic We Prove. It

How Is It That There Are So Many Minds That Are Incapable Of Understanding Mathematics? ... The Skeleton Of Our Understanding, ... And Actually They Are The Majority. ... We Have Here A Problem That Is Not Easy Of Solution, But Yet Must Engage The Attention Of All Who Wish To Devote Themselves To Education.

In The Old Days When People Invented A New Function They Had Something Useful In Mind.

It May Happen That Small Differences In The Initial Conditions Produce Very Great Ones In The Final Phenomena.

It Is The Harmony Of The Diverse Parts, Their Symmetry, Their Happy Balance; In A Word It Is All That Introduces Order, All That Gives Unity, That Permits Us To See Clearly And To Comprehend At Once Both The Ensemble And The Details.

It Is Far Better To Foresee Even Without Certainty Than Not To Foresee At All.