Scientia potentia est phrase ""sapientia est potentia"" is often translated as "wisdom is power". The earliest documented occurrence of the phrase "Knowledge is power" is from Imam Ali (599-661 CE), as recorded in the tenth-century book Nahj Al-Balagha (originally in Arabic). He said: Another account of this concept is found in the Shahnameh by the Persian poet Ferdowsi (940–1020 CE) who wrote: "Capable is he who is wise" (in Persian: توانا بود هر که دانا بود). This hemistich is translated to English as "knowledge is power" or "One who has wisdom is powerful". A proverb in practically the same wording is found in
Noun phrase rules of the language in question; for English, see English articles.) In the original X-bar theory, the two respective types of entity are called noun phrase (NP) and N-bar (N, N′). Thus in the sentence "Here is the big house", both "house" and "big house" are N-bars, while "the big house" is a noun phrase. In the sentence "I like big houses", both "houses" and "big houses" are N-bars, but "big houses" also functions as a noun phrase (in this case without an explicit determiner). In some modern theories of syntax, however, what are called "noun phrases" above are no