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The ought expresses a kind of necessity, a kind of connection of actions with their grounds or reasons, such as is to be found nowhere else in the whole natural world. For of the natural world our understanding can know nothing except what is, what has been, or what will be. We cannot say that anything in it ought to be other than it actually was, is, or will be. In fact, so long as we are considering the course of nature, the ought has no meaning whatever. We can as little inquire what ought to happen in nature as we can inquire what properties a circle ought to have.

The ought expresses a kind of necessity, a kind of connection of actions with their grounds or reasons, such as is to be found nowhere else in the whole natural world. For of the natural world our understanding can know nothing except what is, what has been, or what will be. We cannot say that anything in it ought to be other than it actually was, is, or will be. In fact, so long as we are considering the course of nature, the ought has no meaning whatever. We can as little inquire what ought to happen in nature as we can inquire what properties a circle ought to have.
Immanuel Kant (identity unresolved)

In print by 1921 AD · modern

Recorded in a printed collection by this date; the original date of these words is still unknown.

Meaning not yet available

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Attribution & collection notes
Author or tradition
Immanuel Kant (identity unresolved)
Attribution: unknown
Country attributed
Not established
A country attribution does not establish the earliest origin.
Historical period
In print by 1921 AD · modern
In print by 1921: recorded in My Commonplace Book (third English edition,1921). Collection publication is an upper bound for this wording, not its earliest origin, composition date or the author's lifetime.
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken.
Recorded source
My Commonplace Book (third English edition,1921) (1921 AD)

Page 350 · printed citation: Immanuel Kant. · compiler notes excluded

A collection's publication date can be later than the words it records.