You thunder and lightning too much; the reader ceases to get under the bed, by and by.

Every improvement that is put upon the real estate is the result of an idea in somebody's head. The skyscraper is another idea; the railroad is another; the telephone and all those things are merely symbols which represent ideas. An andiron, a wash-tub, is the result of an idea that did not exist before.

Every man is a moon and has a side which he turns toward nobody: you have to slip around behind it if you want to see it.

What do we call love, hate, charity, revenge, humanity, forgiveness? Different results of the master impulse, the necessity of securing one's self-approval.

Medicine has made all its progress during the past fifty years. ... How many operations that are now in use were known fifty years ago?-they were not operations, they were executions.

A crime persevered in a thousand centuries ceases to be a crime, and becomes a virtue. This is the law of custom, and custom supersedes all other forms of law.

The symbol of the race ought to be a human being carrying an ax, for every human being has one concealed about him somewhere, and is always seeking the opportunity to grind it.