To Invent Is To Discern, To Choose.

Analyse Data Just So Far As To Obtain Simplicity And No Further.

Deviner Avant De Démontrer! Ai-je Besoin De Rappeler Que C'est Ainsi Que Se Sont Faites Toutes Les Découvertes Importantes.

Mathematics Is The Art Of Giving The Same Name To Different Things.

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

It May Be Appropriate To Quote A Statement Of Poincare, Who Said (partly In Jest No Doubt) That There Must Be Something Mysterious About The Normal Law Since Mathematicians Think It Is A Law Of Nature Whereas Physicists Are Convinced That It Is A Mathematical Theorem.