Everyone Who Has Ever Written Will Have

I Have Often Noticed That When People Come To Understand A Mathematical Proposition In Some Other Way Than That Of The Ordinary Demonstration, They Promptly Say, "oh, I See. That's How It Must Be." This Is A Sign That They Explain It To Themselves From Within Their Own System.

If You Are Going To Build Something In The Air It Is Always Better To Build Castles Than Houses Of Cards.

The Greatest Things In The World Are Brought About By Other Things Which We Count As Nothing: Little Causes We Overlook But Which At Length Accumulate.

The Motives That Lead Us To Do Anything Might Be Arranged Like The Thirty-two Winds And Might Be Given Names On The Same Pattern: For Instance, "bread-bread-fame" Or "fame-fame-bread."

There Is No Greater Impediment To Progress In The Sciences Than The Desire To See It Take Place Too Quickly.