Correspondence of Leonhard Euler with Christian Goldbach

The lifelong friendship between Leonhard Euler and Christian Goldbach began when Euler joined the Russian Academy of Sciences at just 20 years old. Goldbach, the Academy's secretary, played a crucial role in supporting Euler's burgeoning career. Their relationship flourished over the years, marked by nearly 200 letters exchanged over 35 years, showcasing their deep intellectual bond and collaboration in the field of mathematics.