From Anna Botsford Comstock’s Handbook of Nature Study:

In my belief, there are two and only two occupations for Saturday [or Sunday] afternoon or forenoon for a teacher. One is to be out-of-doors and the other is to lie in bed, and the first is best. Out in this, God’s beautiful world, there is everything waiting to heal lacerated nerves, to strengthen tired muscles, to please and content the soul that is torn to shreds with duty and care.