Worry Is The Stomach's Worst Poison.

If I Have A Thousand Ideas And Only One Turns Out To Be Good, I Am Satisfied.

One Can State, Without Exaggeration, That The Observation Of And The Search For Similarities And Differences Are The Basis Of All Human Knowledge.

I Am A Misanthrope Yet Utterly Benevolent.

For Me Writing Biographies Is Impossible, Unless They Are Brief And Concise, And These Are, I Feel, The Most Eloquent.

My Home Is Where I Work, And I Work Everywhere.