§5. The Content of the Fundamental Law of Nature
1. This brings us finally to the content of the fundamental law of na-
ture, namely, what it prescribes, including the several (natural) rights Locke
takes it to imply. In talking about equality above, we have already said
something about those rights. The term “Fundamental Law of Nature” is
used in: ¶¶16, 134, 135, 159, 183; and there are also statements about the
“Law of Nature” in: ¶¶4, 6, 7, 8, 16, 57, 134, 135, 159, 171, 172, and 181–183.
Two important clauses of the Fundamental Law of Nature are con-
tained in the statement I quoted earlier from ¶6. These read as follows:
(a) The first clause: “being all equal and independent, no one ought to
harm another in his Life, Health, Liberty, or Possessions.”
(b) The second clause: “Every one as he is bound to preserve himself, and
not to quit his Station willfully; so by like reason when his own Preserva-
tion comes not in competition, ought he, as much as he can, to preserve the
rest of Mankind, and may not unless it be to do Justice on an Offender, take
away, or impair the life, or what tends to the Preservation of the Life, the
Liberty, Health, Limb, or Goods of another.”
Note the force of “by like reason” in the second clause. I am bound to
preserve myself because I am God’s property; but others also are God’s
property, and so for the same reason I am bound to preserve them also, at
least when their preservation is not in competition with mine. In ¶134
Locke says: “the first and fundamental natural Law, which is to govern even
the Legislative itself, is the preservation of Society and (as far as will consist
with the public good) of every person in it.”
(c) A third clause, in ¶16, concerns a priority for the innocent:
“Man being to be preserved, as much as possible, when all cannot be pre-
served, the safety of the Innocent is to be preferred.”
2. One application of this last clause is to self-defense: if I am wrongly
attacked by another intending to take my life, then since I am innocent
(let’s assume), I have a right of self-defense.
Another application of the third, and also of the second clause is to pro-
tect the families (the wives and children) of those violent men who begin
an unjust war, seeking conquest. Since their families are innocent—not in-
volved in their guilt and destruction—enough property and goods must be
left to them by the (just) victor so that they do not perish. (See ¶¶178–183.)
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His Doctrine of Natural Law
Copyright © The President and Fellows of Harvard College
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