The proposed book contains notebooks unique in their artistic and historical significance, as well as letters and telegrams of the author of the most heartfelt and sincere works of the 20th century. Travel essays about traveling to Soviet Russia; diary entries telling about visiting Spain during the Civil War; diary 1939-1944, first published in France only a few decades after the death of the author. For the first time, the Russian reader was given the opportunity to see how the personality of the creator of the "Little Prince" was formed, how his views on life changed.