At the time of his death in 1993, Reiner Schürmann was one of the worldâs leading Heidegger scholars. On Heideggerâs Being and Time is an outstanding exploration and elucidation of Heideggerâs most important work by two major philosophers, providing a masterclass in reading a philosophical classic. It is also the first time that Schürmannâs renowned lectures on Heidegger have been published.