In all intellectual debates, both sides tend to be correct in what they affirm, and wrong in what they deny.

What a country wants to make it richer is never consumption, but production. Where there is the latter, we may be sure that there is no want of the former. To produce, implies that the producer de_sires to consume; why else should he give himself useless labor? He may not wish to consume what he himself produces, but his motive for producing and selling is the desire to buy. Therefore, if the producers generally produce and sell more and more, they certainly also buy more and more.

No slave is a slave to the same lengths, and in so full a sense of the word, as a wife is.

It appears, then, to be a condition of a genuinely scientific hypothesis, that it be not destined always to remain an hypothesis, but be certain to be either proved or disproved by.. .comparison with observed facts.

It's hardly possible to overstate the value, in the present state of human improvement, of placing human beings in contact with other persons dissimilar to themselves, and with modes of thought and action unlike those with which they are familiar. Such communication has always been... one of the primary sources of progress.

The beliefs which we have most warrant for have no safeguard to rest on but a standing invitation to the whole world to prove them unfounded. If the challenge is not accepted, or is accepted and the attempt fails, we are far enough from certainty still; but we have done the best that the existing state of human reason admits of; we have neglected nothing that could give the truth a chance of reaching us.

The reasons for legal intervention in favour of children apply not less strongly to the case of those unfortunate slaves and victims of the most brutal part of mankind - the lower animals.