One half who graduate from college never read another book.

We are literally children of the earth, and removed from her our spirits wither or run to various forms of insanity. Unless we can refresh ourselves at least by intermittent contact with nature, we grow awry.

The chorus-ending from Aristophanes, raised every night from every ditch that drains into the Mediterranean, hoarse and primeval as the raven's croak, is one of the grandest tunes to walk by. Or on a night in May, one can walk through the too rare Italian forests for an hour on end and never be out of hearing of the nightingale's song.

There is no orthodoxy in walking. It is a land of many paths and no-paths, where every one goes his own and is right.

Never tell a young person that anything cannot be done. God may have been waiting centuries for someone ignorant enough of the impossible to do that very thing.

And how fascinating history is - the long, variegated pageant of man's still continuing evolution of this strange planet, so much the most interesting of all the myriads of spinners through space.

After a day's walk everything has twice its usual value.