Erasmus lived against the backdrop of the growing European religious Reformation. He remained a member of the Catholic Church all his life, remaining committed to reforming the Church and its clerics' abuses from within. He also held to the doctrine of synergism, which some Reformers (Calvinists) rejected in favor of the doctrine of monergism. His middle-road (via media) approach disappointed, and even angered, scholars in both camps.
Erasmus died suddenly in Basel in 1536 while preparing to return to Brabant and was buried in Basel Minster, the former cathedral of the city.
I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree.
Young bodies are like tender plants, which grow and become hardened to whatever shape you've trained them.