"Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down."    --Charles F. Kettering

"You cannot depend on your eyes when your imagination is out of focus."   --Mark Twain

"People may flatter themselves just as much by thinking that their faults are always present to other people's minds, as if they believe that the world is always contemplating their individual charms and virtues."   --Elizabeth Gaskell

"Only those who know the supremacy of the intellectual life can understand the grief of one who falls from that serene activity into the absorbing soul-wasting struggle with worldly annoyances."   --George Eliot