 There is a controversy about the attribution of a small commentary on the secret of the Kaddish (a Jewish prayer praising God, recited between sections of the daily prayer services and on behalf of departed relatives)to Crescas. According to Harvey 2010 and Ofir 2001 Crescas wrote it when he was a young student in Rabbi Nissim of Gerondi’s yeshiva. In this first work we can see the influence of the Kabbalistic school of Gerona. According to Ackerman 2013b, this text is not from Crescas and so there is no indication that the Kabbalah had any influence on Crescas.