Only God is perfect, but people have the capacity for continual improvement and movement toward perfection by taking individual responsibility for their deeds and actions on Earth, such as heartfelt, adoration, devotion, and surrender to the one God Sikhisms most important ceremony, introduced by the tenth guru, ________ (1666- 1708), is the Amrit (or Baptism), in which Sikhs declare they will uphold the principles of the faith.