They must work and punish the adults with less rigour.

Now it was to be apprehended that they could not do these things, without seeing the political advantages which would arise to themselves from so doing; and that, reasoning upon this, they might be induced to go on to give them greater indulgences, rights, and privileges, in time.

But how would every such successive improvement of their condition operate, but to bring them nearer to the state of freemen?
In the same manner it was contended, that the better treatment of the slaves in the colonies, or that the emancipation of them there, when fit for it, would of itself lay the foundation for the abolition of the Slave Trade.

For if the slaves were kindly treated, that is, if marriage were encouraged among them; if the infants who should be born were brought up with care; if the sick were properly attended to; if the young and the adult were well fed and properly clothed, and not over-worked, and not worn down by the weight of severe punishments, they would necessarily increase, and this on an extensive scale.

But if the planters were thus to get their labourers from the births on their own estates, then the Slave Trade would in time be no longer necessary to them, and it would die away as an useless and a noxious plant.