To me - old age is always ten years older than I am.

If we take science as our sole guide, if we accept and hold fast that alone which is verifiable, the old theology must go.

To me - old age is always ten years older than I am.

A man can fail many times, but he isn't a failure until he begins to blame somebody else.

A man can get discouraged many times but he is not a failure until he begins to blame somebody else and stops trying.

The lure of the distant and the difficult is deceptive. The great opportunity is where you are.

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.

The secret of happiness is something to do.

I seldom go into a natural history museum without feeling as if I were attending a funeral.

To treat your facts with imagination is one thing, to imagine your facts is another.