Science Is Practical Philosophy.

Variant: When It Is Not In Our Power To Follow What Is True, We Ought To Follow What Is Most Probable.

I Experienced In Myself A Certain Capacity For Judging Which I Have Doubtless Received From God, Like All The Other Things That I Possess; And As He Could Not Desire To Deceive Me, It Is Clear That He Has Not Given Me A Faculty That Will Lead Me To Err If I Use It Aright.

An Optimist May See A Light Where There Is None, But Why Must The Pessimist Always Run To Blow It Out?

Some Years Ago I Was Struck By The Large Number Of Falsehoods That I Had Accepted As True In My Childhood, And By The Highly Doubtful Nature Of The Whole Edifice That I Had Subsequently Based On Them. I Realized That It Was Necessary, Once In The Course Of My Life, To Demolish Everything Completely And Start Again Right From The Foundations If I Wanted To Establish Anything At All In The Sciences That Was Stable And Likely To Last.

Few Look For Truth; Many Prowl About For A Reputation Of Profundity By Arrogantly Challenging Whichever Arguments Are The Best.