The author Youssef Karam explains, in his book "Mind and Existence," how every person familiar with philosophy knows that the issue of knowledge is the axis around which issues of existence revolve, meaning that the solutions to these issues are determined according to the desired solution to the issue of knowledge. In presenting this issue is a demonstration of the first causes that determined all A philosopher to reveal all his opinions, so the issue of knowledge ended up being a question of reason. In this book, the author takes us on an interesting journey, collecting and analyzing the relationship between mind and existence through the philosophy of his vision of life as a whole.