at his invitation, another future great scientist, leonard euler, arrived in russia. during his life, the swiss mathematician, mechanic and physicist wrote about 850 scientific works, most of them in russia. at the st. petersburg academy of sciences, he was a professor of physics, headed the department of mathematics, and developed methods for raising the large bell in the moscow kremlin. even when eller lost his sight, he continued to work for the benefit of science, dictated texts, and his student translated them into russian. empress catherine invited the best ophthalmologist for him. euler underwent surgery and saw the light again. despite the warning, the scientist began to work intensively and lost his sight for the second time. on his day death, the st. petersburg academy of sciences was clothed in deep mourning. in 1758, at the height of the seven years' war, when könecksberg, now kaliningrad, was occupied by russian troops, the founder of german classical philosophy, immanuel kant, swore allegiance to russia. than unrestricted interaction in the past. in rec