Poso has one customary value, called ‘Sintuwu Maroso’ which comes from two words, ‘Sintuwu’ which means fellowship, unity, simplicity and ‘Maroso’ which means strong. So, if both are combined, they become a strong life community, where the life of the people is colored by harmony and tolerance.
Besides that, there is something interesting behind the philosophy of life among 'to Poso' (people of Poso) in Pamona local language, the word of 'Poso' in Indonesian means ‘broken out’, certainly it is contrast with the value upheld by people of Poso. It can be concluded that even though Poso faced intolerance issue, the people of Poso still keep the values of Sintuwu Maroso which mean, Tuwu Mombetuwunaka (respectful living), Tuwu Mombepatuwu (having mutual living) and Tuwu Mombesungko (giving help each other).