A Man Is Never More Serious Than

Everyone Is Perfectly Willing To Learn From Unpleasant Experience - If Only The Damage Of The First Lesson Could Be Repaired.

There Are People Who Think That Everything One Does With A Serious Face Is Sensible.

The Lower Classes Of Men, Though They Do Not Think It Worthwhile To Record What They Perceive, Nevertheless Perceive Everything That Is Worth Noting; The Difference Between Them And A Man Of Learning Often Consists In Nothing More Than The Latter's Facility For Expression.

I Forget The Greater Part Of What I Read, But All The Same It Nourishes My Mind.

The More Experiences And Experiments Accumulate In The Exploration Of Nature, The More Precarious The Theories Become. But It Is Not Always Good To Discard Them Immediately On This Account. For Every Hypothesis Which Once Was Sound Was Useful For Thinking Of Previous Phenomena In The Proper Interrelations And For Keeping Them In Context. We Ought To Set Down Contradictory Experiences Separately, Until Enough Have Accumulated To Make Building A New Structure Worthwhile.