Eventually, according to Kramer (1963): Gilgamesh became the hero par excellence of the ancient world—an adventurous, brave, but tragic figure symbolizing man's vain but endless drive for fame, glory, and immortality.By the Old Babylonian Period (), stories of Gilgamesh's legendary exploits had been woven into one or several long epics. The "Epic of Gilgamesh", the most complete account of Gilgamesh's adventures, was composed in Akkadian during the Middle Babylonian Period ( 1600 – 1155 BC) by a scribe named Sîn-lēqi-unninni. The most complete surviving version of the "Epic of Gilgamesh" is recorded on a set of twelve clay tablets dating to the seventh century BC, found in the Library of Ashurbanipal in the Assyrian capital of Nineveh. The epic survives only in a fragmentary form, with many pieces of it missing or damaged. Some scholars and translators choose to supplement the missing parts of the epic with material from the earlier Sumerian poems or from other versions of the "Epic of Gilgamesh" found at other sites throughout the Near East.