Simcha Blass Simcha Blass Simcha Blass (November 27, 1897 – July 18, 1982; ) was a Polish-Israeli engineer and inventor who developed the drip irrigation system with his son Yeshayahu. Simcha Blass was born in Warsaw, Poland, which was then part of the Russian Empire, to an Orthodox Jewish family. He was active in the Jewish self-defense units organized in Warsaw to defend Jews during the end of World War I. His engineering studies in Warsaw were interrupted by the Polish-Soviet War and completed after that war. During the war, he was recruited to the Polish Army, there he invented for the
Simcha Bunim of Peshischa in "Kol Simcha". Others are cited in later works. One of the more famous oral teachings attributed to Rabbi Simcha Bunim of Peschischa goes as follows: "Everyone must have two pockets, with a note in each pocket, so that he or she can reach into the one or the other, depending on the need. When feeling lowly and depressed, discouraged or disconsolate, one should reach into the right pocket, and, there, find the words: "For my sake was the world created."" "But when feeling high and mighty one should reach into the left pocket, and find the words: "I am