«I am delighted with the presentation of an ambitious and extremely interesting project that involves the compilation and critical discussion of data on ancient vegetation and flora that have given rise to the ecosystems in which humans now walk. A very well-documented compilation covering the last 66 million years across the Iberian geography, including paleofloristic and paleoecological data. About two million years ago, our own hominin lineage originated, climates changed, glaciations appeared, some plant formations began to resemble those of today… all of this cannot be understood without a foundational work like this. It is commendable to have coordinated hundreds of authors and specialists from around the world. It is an open project, a dynamic project that will be enriched by successive contributions, but it already has great value due to this thorough compilation. We cannot understand the human footprint on the territory if we do not understand what these landscapes were like before humans were very numerous, when Homo sapiens was just beginning, when there were barely 3,000, 4,000 humans in the whole of Eurasia with very low population density, and therefore, with a very small impact on that vegetation and those ecosystems. From then on, a race of demographic, technological, and social development of our own species would begin, while ecosystems, vegetation, and landscapes that were stabilizing were shaping themselves after the glaciations. I invite people to make the most of this, it is the best tribute we can pay to the multiple authors, co-authors, and coordinators of this extensive work, and let’s enjoy learning and give meaning to the present by studying and understanding the past. Long live this project, and enjoy reading and understanding it.»