In order to have friends, you must first be one.
Down in their hearts, wise men know this truth: the only way to help yourself is to help others.
The worst thing about medicine is that one kind makes another necessary
How many a man has thrown up his hands at a time when a little more effort, a little more patience would have achieved success.
Man is not what he thinks he is, but what he thinks, he is.
Progress needs the brakeman, but the brakeman should not spend all his time putting on the brakes.