If you are going to make a book end badly, it must end badly from the beginning.

Since hate poisons the soul, don't cherish enmities or grudges: avoid people who make you unhappy.

To be wholly devoted to some intellectual exercise is to have succeeded in life.

We advance in years somewhat in the manner of an invading army in a barren land; the age that we have reached, as the saying goes, we but hold with an outpost, and still keep open communications with the extreme rear and first beginnings of the march.

I never weary of great churches. It is my favorite kind of mountain scenery. Mankind was never so happily inspired as when it made a cathedral.

Live life to the fullest.

It is not likely that posterity will fall in love with us, but not impossible that it may respect or sympathize; so a man would rather leave behind him the portrait of his spirit than a portrait of his face.