"If a man write a better book, preach a better sermon, or make a better mouse-trap than his neighbour, tho' he build his house in the woods, the world will make a beaten path to his door."

"Curiosity is lying in wait for every secret."

"The purpose of life is not to be happy. It is to be useful, to be honourable, to be compassionate; to have it makes some difference that you have lived and lived well."