The high value of astronomical knowledge is already demonstrated by the astronomical section of the Book of Enoch (about 72-80 BC), as well as by such sayings as those of Eleazar Ḥisma (about 100), a profound mathematician, who could "count the drops in the ocean" (Hor. 10a), and who declared that "ability to compute the solstice and the calendar is the 'dessert [auxiliaries] of wisdom '" (Ab. iii. 18).