Bad Books Engender Bad Habits, But Bad

The Two Operations Of Our Understanding, Intuition And Deduction, On Which Alone We Have Said We Must Rely In The Acquisition Of Knowledge.

The Mind Effortlessly And Automatically Takes In New Ideas, Which Remain In Limbo Until Verified Or Rejected By Conscious, Rational Analysis.

Thus Each Truth Discovered Was A Rule Available In The Discovery Of Subsequent Ones.

Neither The True Nor The False Roots Are Always Real; Sometimes They Are Imaginary; That Is, While We Can Always Imagine As Many Roots For Each Equation As I Have Assigned, Yet There Is Not Always A Definite Quantity Corresponding To Each Root We Have Imagined.

If I Found Any New Truths In The Sciences, I Can Say That They Follow From, Or Depend On, Five Or Six Principal Problems Which I Succeeded In Solving And Which I Regard As So Many Battles Where The Fortunes Of War Were On My Side.