The doctrine called Philosophical Necessity is simply this: that, given the motives which are present to an individual's mind, and given likewise the character and disposition of the individual, the manner in which he will act might be unerringly inferred: that if we knew the person thoroughly, and knew all the inducements which are acting upon him, we could foretell his conduct with as much certainty as we can predict any physical event.

No one can be a great thinker who does not recognize that as a thinker it is his first duty to follow his intellect to whatever conclusions it may lead.

...it is not only the general principles of justice that are infringed, or at least set aside, by the exclusion of women, merely as women, from any share in the representation; that exclusion is also repugnant to the particular principles of the British Constitution. It violates one of the oldest of our constitutional maxims...that taxation and representation should be co-extensive. Do not women pay taxes?

There is a limit to the legitimate interference of collective opinion with individual independence: and to find that limit, and maintain it against encroachment, is as indispensable to a good condition of human affairs, as protection against political despotism.

Trade is a social act. Whoever undertakes to sell any description of any goods to the public, does what affects the interest of other persons, and of society in general; and thus his conduct, in principal, comes within the jurisdiction of society.

When the land is cultivated entirely by the spade and no horses are kept, a cow is kept for every three acres of land.

The ne plus ultra of wickedness ... is embodied in what is commonly presented to mankind as the creed of Christianity.