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laws (of nature)
(divine) providence
生老病死は自然の摂理だ。
Birth, aging, sickness, and death are laws of nature.
命あるものが死ぬのは摂理に従うことだ。
That living things die is simply following the laws of nature.
生命の誕生と終焉は宇宙の摂理の一つとされている。
The birth and end of life are considered among the laws of the cosmos.