Only One Absolute Certainty Is Possible To

Oh Devil! Truth Is Better Than Much Profit. I Have Searched Over The Grounds Of My Belief, And If Wife And Child And Name And Fame Were All To Be Lost To Me One After The Other As The Penalty, Still I Will Not Lie.

If A Little Knowledge Is Dangerous, Where Is The Man Who Has So Much As To Be Out Of Danger?

My Reflection, When I First Made Myself Master Of The Central Idea Of The 'origin', Was, 'how Extremely Stupid Not To Have Thought Of That!'

I Took Thought, And Invented What I Conceived To Be The Appropriate Title Of 'agnostic'.

I Really See No Harm Which Can Come Of Giving Our Children A Little Knowledge Of Physiology. ... The Instruction Must Be Real, Based Upon Observation, Eked Out By Good Explanatory Diagrams And Models, And Conveyed By A Teacher Whose Own Knowledge Has Been Acquired By A Study Of The Facts; And Not The Mere Catechismal Parrot-work Which Too Often Usurps The Place Of Elementary Teaching.