{"identifiers": {"goodreads": ["66354"], "librarything": ["13383"]}, "title": "Flow", "subtitle": "The Psychology of Optimal Experience", "authors": [{"key": "/authors/OL33636A"}], "publish_date": "March 13, 1991", "publishers": ["Harper Perennial"], "weight": "8 ounces", "covers": [39908], "physical_format": "Paperback", "subjects": ["Personal Growth - Happiness", "Psychology", "General", "Psychology & Psychiatry / General", "Happiness", "Attention"], "languages": [{"key": "/languages/eng"}], "first_sentence": {"type": "/type/text", "value": "TWENTY-THREE HUNDRED YEARS AGO Aristotle concluded that, more than anything else, men and women seek happiness."}, "isbn_13": ["9780060920432"], "isbn_10": ["0060920432"], "type": {"key": "/type/edition"}, "physical_dimensions": "7.9 x 5.2 x 0.5 inches", "source_records": ["amazon:0060920432"], "key": "/books/OL9239159M", "number_of_pages": 320, "works": [{"key": "/works/OL278571W"}], "latest_revision": 8, "revision": 8, "created": {"type": "/type/datetime", "value": "2008-04-30T09:38:13.731961"}, "last_modified": {"type": "/type/datetime", "value": "2026-01-30T21:22:32.695206"}}