Two fixed ideas can no more exist together in the moral world than two bodies can occupy one and the same place in the physical world.

Nothing that is morally wrong can be politically right.

You have no compelling moral intuitions to guide you in solving that problem. Your moral feelings are attached to frames, to descriptions of reality rather than to reality itself.

No morality can be founded on authority, even if that authority were divine

A powerful intellect by no means implies a corresponding development of the moral sense.

...where there is no sound reason, there can be no real virtue.

It makes no sense at all to have the most important features of our lives anchored to divisive claims about the unique sanctity of ancient books or to rumors of ancient miracles.

The existence of any method, standard, custom or practice is no reason for its continuance when a better is offered.

I think nothing is religion which puts one individual absolutely above others, and surely nothing is religion which puts one sex above another.

Nature has no use for the plea that one 'did not know'.

No nation was ever so virtuous as each believes itself, and none was ever so wicked as each believes the other.

Reason and experience both forbid us to expect that national morality can prevail in exclusion of religious principles.

There seems no reason why patriotism and narrowness should go together, or why intellectual fair mindedness should be confounded with political trimming, or why serviceable truth should keep cloistered because not partisan.

There is no fire like passion, there is no shark like hatred, there is no snare like folly, there is no torrent like greed.