The first latin script which consisted of both majuscule and minuscule letters (lowercase and uppercase, or small and capital letters) is Carolingian minuscule. It is a fact. But what is unknown to me (and as far as I know is unknown to all scholars) is the first purpose or first use of capital letters. Does anybody know any clear evidence that reveals the first application of capital letters. Was it used, for the first time, to distinguish the word and the names of God? Is it a biblical and christian effect? Or was it used to apply clarity for dividing sentences and paragraphs? Or the first use of capital was to highlight all proper names? Which of these applications was the first one?