On the Fourfold Root of the Principle of Sufficient Reason is an elaboration on the classical principle of sufficient reason, written by German philosopher Arthur Schopenhauer as his doctoral dissertation in 1813. The principle of sufficient reason is a powerful and controversial philosophical principle stipulating that everything must have a reason or cause. Schopenhauer revised and re-published it in 1847. The work articulated the centerpiece of many of Schopenhauer's arguments, and throughout his later works he consistently refers his readers to it as the necessary beginning point for a full understanding of his further writings.
"}{"type":"standard","title":"Adelina Rodriguez","displaytitle":"Adelina Rodriguez","namespace":{"id":0,"text":""},"wikibase_item":"Q98211252","titles":{"canonical":"Adelina_Rodriguez","normalized":"Adelina Rodriguez","display":"Adelina Rodriguez"},"pageid":64800076,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/Adelina_S._Rodriguez.jpg/330px-Adelina_S._Rodriguez.jpg","width":320,"height":442},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/0/04/Adelina_S._Rodriguez.jpg","width":518,"height":715},"lang":"en","dir":"ltr","revision":"1286351873","tid":"2e2a08cf-1d06-11f0-8089-3adafea2f226","timestamp":"2025-04-19T10:08:03Z","description":"Filipino politician (1920–2021)","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Adelina_Rodriguez","revisions":"https://en.wikipedia.org/wiki/Adelina_Rodriguez?action=history","edit":"https://en.wikipedia.org/wiki/Adelina_Rodriguez?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Adelina_Rodriguez"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Adelina_Rodriguez","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Adelina_Rodriguez","edit":"https://en.m.wikipedia.org/wiki/Adelina_Rodriguez?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Adelina_Rodriguez"}},"extract":"Adelina Galang Santos Rodriguez, sometimes referred to by her initials ASR, was a Filipino politician and civil leader who served as the first woman Mayor of Quezon City from 1976 to 1986. She also distinguished herself in charity work especially her programs for the Philippine Red Cross. She was married to Isidro Rodriguez, a softball official and former Governor of Rizal.","extract_html":"
Adelina Galang Santos Rodriguez, sometimes referred to by her initials ASR, was a Filipino politician and civil leader who served as the first woman Mayor of Quezon City from 1976 to 1986. She also distinguished herself in charity work especially her programs for the Philippine Red Cross. She was married to Isidro Rodriguez, a softball official and former Governor of Rizal.
"}{"fact":"The largest cat breed is the Ragdoll. Male Ragdolls weigh between 12 and 20 lbs (5.4-9.0 k). Females weigh between 10 and 15 lbs (4.5-6.8 k).","length":141}
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