Here we have three great lectures by Leonard Susskind, which do not come as a part of any of his taught courses. The first one, delves into the physical properties of time and the role of it in physics. Susskind introduces the view of time as it might have been seen from the point of view of Boltzmann. In the second lecture Susskind discusses some of his favourite topics including the physics of the holographic principle and the theoretical peculiarities of black holes. Finally, in lecture 3, we go even deeper down the rabbit hole to discuss quantum entanglement, which appears to be unexpectedly connected to both the holographic principle and the physics of black holes. As always, for more related videos use the links below and register for our email newsletter.