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In philosophy and science, a first principle is a basic proposition or assumption that cannot be deduced from any other proposition or assumption. First principles in philosophy are from first cause [1] attitudes and taught by Aristotelians, and nuanced versions of first principles are referred to as postulates by Kantians. [2]
To "act on principle" is to act in accordance with one's moral ideals. [7] Principles are absorbed in childhood through a process of socialization. There is a presumption of liberty of individuals that is restrained. Exemplary principles include First, do no harm, the Golden Rule and the Doctrine of the Mean.
For example, considering the proposition "all bachelors are unmarried:" its negation (i.e. the proposition that some bachelors are married) is incoherent due to the concept of being unmarried (or the meaning of the word "unmarried") being tied to part of the concept of being a bachelor (or part of the definition of the word "bachelor").
The Latin cogito, ergo sum, usually translated into English as "I think, therefore I am", [a] is the "first principle" of René Descartes's philosophy. He originally published it in French as je pense, donc je suis in his 1637 Discourse on the Method, so as to reach a wider audience than Latin would have allowed. [1]
Wikipedia:Five pillars: Perhaps the most popular, this was written as a simple summary for new editors. User:Jimbo Wales/Statement of principles: One of the oldest, this statement of principles was written by Wikipedia cofounder Jimmy Wales. Wikipedia:Trifecta: This three-point simplified ruleset was the precursor to the Five Pillars page.
In general, a calculation is said to be ab initio (or "from first principles") if it relies on basic and established laws of nature without additional assumptions or special models. For example, an ab initio calculation of the properties of liquid water might start with the properties of the constituent hydrogen and oxygen atoms and the laws of ...
However, if the cosmos had a beginning, Aristotle argued, it would require an efficient first cause, a notion that Aristotle took to demonstrate a critical flaw. [22] [23] [24] But it is a wrong assumption to suppose universally that we have an adequate first principle in virtue of the fact that something always is so ...
Pedis possessio is a legal phrase in common law used to describe walking on a property to establish ownership; this concept involves the establishment of first possession of land. By walking on a property and defining its bounds, possession is established. Legal dictionaries [2] put forth this definition.