We may sit in our library and yet be in all quarters of the earth.

Happy indeed is the naturalist: to him the seasons come round like old friends; to him the birds sing: as he walks along, the flowers stretch out from the hedges, or look up from the ground, and as each year fades away, he looks back on a fresh store of happy memories.

A wise system of education will at last teach us how little man yet knows, how much he has still to learn.

Rest is not idleness, and to lie sometimes on the grass under trees on a summer's day, listening to the murmur of the water, or watching the clouds float across the sky, is by no means a waste of time.

Here are the three great questions which in life we have over and over again to answer: Is it right or wrong? Is it true or false? Is it beautiful or ugly? Our education ought to help us to answer these questions.

False pleasures come from without and are imperfect: happiness is internal and our own.

Life is a great gift, and as we reach years of discretion, most of us naturally ask ourselves what should be the main object of our existence.