"A sacrifice to be real must cost, must hurt, and must empty ourselves. Give yourself fully to God. He will use you to accomplish great things on the condition that you believe much more in his love than in your weakness."
Albanian-born Catholic nun and missionary who founded the Missionaries of Charity in Kolkata. She became internationally known for work with people who were poor, sick, and dying. She received the Nobel Peace Prize in 1979 and was later canonized as Saint Teresa of Calcutta.