"Fight all error, but do it with good humor, patience, kindness, and love. Harshness will damage your own soul and spoil the best cause."
Birth date: June 23, 1390
Birth place: Poland
Death date: December 24, 1473
Death place: Poland
Feast day: December 23
Canonized Date: July 16, 1767
Canonized By: Clement XIII
Date in Brotherhood of Saints: December 23