His command over his children is but temporary, and reaches not their life or property: it is but a help to the weakness and imperfection of their nonage, a discipline necessary to their education: and though a father may dispose of his own possessions as he pleases, when his children are out of danger of perishing for want, yet his power extends not to the lives or goods, which either their own industry, or another's bounty has made their's; nor to their liberty