The art of music is good, for the reason, among others, that it produces pleasure; but what proof is it possible to give that pleasure is good? If, then, it is asserted that there is a comprehensive formula, including all things which are in themselves good, and that whatever else is good, is not so as an end, but as a mean, the formula may be accepted or rejected, but is not a subject of what is commonly understood by proof.

Not only the grounds of the opinion are forgotten in the absence of discussion, but too often the meaning of the opinion itself... Instead of a vivid conception and a living belief, there remain only a few phrases retained by rote; or, if any part, the shell and husk only of the meaning is retained, the finer essence being lost.

This is what writers mean when they say that the notion of cause involves the idea of necessity. If there be any meaning which confessedly belongs to the term necessity, it is unconditionalness. That which is necessary, that which must be, means that which will be, whatever supposition we may make in regard to all other things.

A people among whom there is no habit of spontaneous action for a collective interest - who look habitually to their government to command or prompt them in all matters of joint concern - who expect to have everything done for them, except what can be made an affair of mere habit and routine - have their faculties only half developed; their education is defective in one of its most important branches.

The individual is not accountable to society for his actions in so far as these concern the interests of no person but himself.

One person with a belief is equal to ninety-nine who have only interests.

It is better to be Socrates dissatisfied than a pig satisfied.