During his stay at Wartburg (May 1521-March 1522), which he referred to as "my Patmos", Luther translated the New Testament from Greek into German, and poured out doctrinal and polemical writings, including in October a renewed attack on Archbishop Albrecht of Mainz, whom he shamed into halting the sale of indulgences in his episcopates, and a "Refutation of the argument of Latomus," in which he expounded the principle of justification to Jacobus Latomus, a philosopher from Louvain. In a letter to Melanchthon of 1 August 1521, he wrote: "your sins be strong, but let your trust in Christ be stronger, and rejoice in Christ who is the victor over sin, death, and the world. We will commit sins while we are here, for this life is not a place where justice resides."