William Blackstone
from Commentaries on the Laws of England

The idea and practice of this political or civil liberty flourish in their highest vigour in these kingdoms, where it falls little short of perfection, and can only be lost or destroyed by the folly or demerits of it’s owner: the legislature, and of course the laws of England, being peculiarly adapted to the preservation of this inestimable blessing even in the meanest subject. Very different from the modern constitutions of other states, on the continent of Europe, and from the genius of the imperial law; which in general are calculated to vest an arbitrary and despotic power of controlling the actions of the subject in the prince, or in a few grandees. And this spirit of liberty is so deeply implanted in our constitution, and rooted even in our very soil, that a slave or a negro, the moment he lands in England, falls under the protection of the laws, and with regard to all natural rights becomes eo instanti a freeman.