Exercise of the muscles keeps the body in health, and exercise of the brain brings peace of mind.

We are all great landed proprietors, if we only knew it. What we lack is not land, but the power to enjoy it. Moreover, this great inheritance has the additional advantage that it entails no labor, requires no management. The landlord has the trouble, but the landscape belongs to everyone who has eyes to see it.

When important decisions have to be taken, the natural anxiety to come to a right decision will often keep you awake. Nothing, however, is more conducive to healthful sleep than plenty of open air.

There can be no merit in believing something which you can neither explain nor understand.

The important thing is not so much that every child should be taught, as that every child should have the opportunity of teaching itself. What does it matter if the pupil know a little more or a little less? A boy who leaves school knowing much, but hating his lessons, will soon have forgotten all he ever learned; while another who had acquired a thirst for knowledge, even if he had learned little, would soon teach himself more than the first ever knew.

Earth and Sky, Woods and Fields, Lakes and Rivers, the Mountain and the Sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

The important thing is not so much that every child should be taught, as that every child should be given the wish to learn.