The Spanish policy was one of conquest and conversion to 'save' the 'heathen' souls by eliminating Guam's indigenous male warriors through war and displacing them from their islands. Rather than ending the Chamorro culture, they ignored that the Chamorro culture was matrilineal. The strength and fortitude of the Chamorro women - the matriarchs - "I Maga Hagas", successfully kept continuous the indigenous culture and traditions, in the face of everwhelming attempts by foreign forces {through the imposition of a foreign language} to expunge it.

The core culture or Kostumbren Chamoru is comprised of complex social protocol centered upon respect: From the kissing of the hands of the elders, passing of legends, chants, courtship rituals, canoemaking, making of the Belembautuyan {a string musical instrument}, fashioning of slings and slingstones, spear and tool manufacture, burial rituals, preparation of herbal medicines by suruhanas, to a person requesting forgiveness from spiritual ancestors when entering a jungle. These "invisible ceremonies" as coined by Cecilia Perez, an indigenous Poet, are often bypassed in the scholarly and leisurely search for authentic visual island culture.

Specialized weavings include plaited work (coconut and pandanus leaf baskets, mats, bags, food containments and hats), loom-woven material (hibiscus and banana fiber skirts, belts and burial shrouds), body ornamentation (bead and shell necklaces, bracelets, earrings, belts and combs made from tor toise shells).

Historian Lawrence Cunningham in 1992 wrote, "In a Chamorro sense, the land and its produce belong to everyone. Inafa'maolek, or interdependence, is the key, or central value, in Chamorro culture ... Inafa'maolek depends on a spirit of cooperation. This is the armature, or core, that everything in Chamorro culture revolves around. It is a powerful concern for mutuality rather than individualism and private property rights."

"The very essence of inafa'maolek is compassion. It's about caring, accepting and helping one another with open hearts and open minds. Inafa'maolek is the inner strength and the treasure of our families and our island community. We live it daily, the warmth, the generosity, the deep and abiding respect for our elders. It lives in the hearts of our people." Gov. Carl Gutierrez Feb. 14, 2000.

"Reciprocity, I believe, is (also) the foundation of the Chamoru culture. It underlies the various cultural aspects of:
Chinchule - Present (money), donation, thing that is given away, gift to institutions, relatives, or strangers who are perceived to be in need.
Ika - gift given to the family of a deceased person. The receiving of ika carries with it an obligation that the recipient will reciprocate to the donor at a later date.
Respetu - respect, veneration, reverence.
Ayuda Familia - help, aid, assist, succor, to extended family as a duty with no questions asked. A form of family love. Example, for thousands of years Chamorus celebrate fiestas whereupon by duty, extended families contribute food and man hours to cook dishes for the village guests. Another example is raising a baby to adulthood whereby entire relatives participate and view themselves as actual parents to the baby. This shows how civilized the Ancient chamorrus really were." Richard Wyttenbach-Santos Nov 1999.

Father Luis de Sanvitores, in the late 1660s wrote: "...they incorporated into their traditions that all lands and men and all things had their origins in their land, and that all had first come forth from a part of the island of Guam, which was first a man, and then a stone, which gave birth to all men, and from there they scattered to Spain, and other parts. They add that when others parted from their people and origin they forgot their language ..."

"There is an old Chamorro proverb, "I erensia, lina'la', espiritu-ta," which means "Our heritage gives life to our spirit." Michael Phillips.