When by these steps he has got resolution enough not to be deterr'd from what he ought to do, by the apprehension of danger; when fear does not, in s… - John Locke

...but since He gave it them for their benefit and the greatest conveniences of life they were capable to draw form it, it cannot be supposed He meant it should always remain common and uncultivated. He gave it to the use of the industrious and rational (and labour was to be his title to it)...

Nothing is in the intellect that was not first in the senses.

In transgressing the law of nature, the offender declares himself to live by another rule than that of reason and common equity, which is that measure God has set to the actions of men for their mutual security; and so he becomes dangerous to mankind, the tie, which is to secure them from injury and violence, being slighted and broken by him : which being a trespass against the whole species, and the peace and safety of it, provided for by the law of nature; every man upon this score, by the right he hath to preserve mankind in general, may restrain, or, where it is necessary, destroy things noxious to them, and so may bring such evil on any one, who hath transgressed that law, as may make him repent the doing of it, and thereby deter him, and by his example others, from doing the like mischief.