Be courteous to all, but intimate with few; and let those few be well tried before you give them your confidence.
There is no such thing as an underestimate of average intelligence.
To be able to fill leisure intelligently is the last product of civilization, and at present very few people have reached this level.
There is no nonsense so errant that it cannot be made the creed of the vast majority by adequate governmental action.
Have no fear of perfection - you'll never reach it.
The better part of valor is discretion, in the which better part I have saved my life.
A rumor without a leg to stand on will get around some other way.