2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35318We comment on the paper [1] by Albert Einstein from 1918 to Willem De Sitter's solution [2] of the Einstein field equation from today's point of view. To this end, we start by describing the geometry of the De Sitter space-time and present its importance for the inflationary cosmological model.19 pages, LaTeX, in German language, submitted for publication, English language title: Einstein's papers in relation to modern cosmologyGeneral Relativity and Quantum Cosmologytext