I have discovered the secret of happiness - it is work, either with the hands or the head. The moment I have something to do, the draughts are open and my chimney draws, and I am happy.
I go to nature to be soothed and healed, and to have my senses put in order.
How beautiful the leaves grow old. How full of light and color are their last days.
For anything worth having one must pay the price; and the price is always work, patience, love, self-sacrifice - no paper currency, no promises to pay, but the gold of real service.
Blessed is the man who has some congenial work, some occupation in which he can put his heart, and which affords a complete outlet to all the forces there are in him.
Science has done more for the development of western civilization in one hundred years than Christianity did in eighteen hundred years.
A man can get discouraged many times but he is not a failure until he begins to blame somebody else and stops trying.
Life is a struggle, but not a warfare.
I still find each day too short for all the thoughts I want to think, all the walks I want to take, all the books I want to read, and all the friends I want to see.
If we take science as our sole guide, if we accept and hold fast that alone which is verifiable, the old theology must go.
Joy in the universe, and keen curiosity about it all - that has been my religion.
Leap, and the net will appear.