Be not another if thou canst be thyself. - Robertson Davies

...people don't want to believe the truth about themselves. They get some mental picture of themselves and then they devil the poor old body, trying to make it like the picture. When it won't obey-can't obey, of course-they are mad at it, and live in it as if it were an unsatisfactory house they were hoping to move out of.

The recognition of oneself as a part of nature, and reliance on natural things, are disappearing for hundreds of millions of people who do not know that anything is being lost.

When a man has become a great figure in society as a physician, we must not be surprised if he regards the laws of society as the laws of Nature — but we need not respect him for it.