Missionaries are individuals who spend their time ministering to the poor, the sick, and the less fortunate around the world. Missionaries quotes show that these people are selfless, and they sacrifice their time and effort in order to improve the lives of others. Many missionaries travel outside the USA, going to third world countries with large populations of people in need. Missionaries may be faith based or they may just be people who want to help others. Many doctors and nurses are missionaries, vaccinating children and treating illness and disease without much pay if any at all. One of the most famous missionaries was Mother Theresa, a woman who spent all of her time ministering to the poor and sick of India without any thought to her own health and safety.