The agreement of the parties cannot make that good which the law maketh void.

Precaution is better than a cure.

It is better, saith the law, to suffer a mischief that is peculiar to one, than an inconvenience that may prejudice many.

So use your own property as not to injure that of another

The law compells no man to impossible things. The argument ab impossibili is forcible in law.

For when the law doth give any thing to one, it giveth impliedly whatsoever is necessary for the taking and enjoying of the same.

In the meane time know this, that the learning of warranties is one of the most curious and cunning learnings of the law, and of great use and consequence.