Be sincere and true to your word, serious and careful in your actions; and you will get along even among barbarians, But if you are not sincere and untrustworthy in your speech, frivolous and careless in your actions, how will you get along even among your own neighbors? When stand, see these principles in front of you; in your carriage see them on the yoke. Then you may be sure to get along.
In [the soul] one part naturally rules, and the other is subject, and the virtue of the ruler we maintain to be different from that of the subject; the one being the virtue of the rational, and the other of the irrational part. Now, it is obvious that the same principle applies generally, and therefore almost all things rule and are ruled according to nature.
All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.
Rhythm and melody enter into the soul of the well-instructed youth and produce there a certain mental harmony hardly obtainable in any other way. . . . thus music, too, is concerned with the principles of love in their application to harmony and rhythm.
There is nothing so bad or so good that you will not find Englishmen doing it; but you will never find an Englishman in the wrong. He does everything on principle.
A maxim is a conclusion upon observation of matters of fact, and is merely speculative; a "principle" carries knowledge within itself, and is prospective.
The fourfold root of the principle of sufficent reason is "Anything perceived has a cause. All conclusions have premises. All effects have causes. All actions have motives.