I Used To Go Away For Weeks

The Most Important Method Of Education Always Has Consisted Of That In Which The Pupil Was Urged To Actual Performance.

The Heart Says Yes, But The Mind Says No.

There Are Yet People Who Say There Is No God. But What Really Makes Me Angry Is That They Quote Me For The Support Of Such Views

I Never Failed In Mathematics. Before I Was Fifteen I Had Mastered Differential And Integral Calculus.

The Theoretical Idea ... Does Not Arise Apart From And Independent Of Experience; Nor Can It Be Derived From Experience By A Purely Logical Procedure. It Is Produced By A Creative Act. Once A Theoretical Idea Has Been Acquired, One Does Well To Hold Fast To It Until It Leads To An Untenable Conclusion.