... All ideas need to be heard, because each idea contains one aspect of the truth. By examining that aspect, we add to our own idea of the truth. Even ideas that have no truth in them whatsoever are useful because by disproving them, we add support to our own ideas.

There are no means of finding what either one person or many can do, but by trying - and no means by which anyone else can discover for them what it is for their happiness to do or leave undone

All that makes existence valuable to any one depends on the enforcement of restraints upon the actions of other people.

Political Economy as a branch of science is extremely modern; but the subject with which its enquiries are conversant has in all ages necessarily constituted one of the chief practical interests of mankind.

Money is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.

A person whose desires and impulses are his own - are the expression of his own nature, as it has been developed and modified by his own culture - is said to have a character. One whose desires and impulses are not his own, has no character, no more than a steam-engine has character.

He who lets the world choose his plan of life for him has need of no other faculty than that of ape-like imitation.