Goddess of Truth, Justice and Universal Order who's symbol was the ostrich feather. She represented order, balance, correct attitudes and thinking, morality, and justice. She was a goddess of the underworld, sitting in judgement over the souls of the dead in the Judgment Hall of Osiris. The power of Maat was said to regulate the seasons, the movement of the stars, and the relations between men and the gods.
She is depicted as a tall woman wearing a crown surmounted by a huge ostrich feather. Her totem symbol is a stone platform or foundation, representing the stable base on which order is built.
The word, Maat translates "that which is straight." it implies anything that is true, ordered, or balanced. She was the female counterpart of Thoth. We know she is a very ancient goddess because we find her in the boat of Ra as it rose above the waters of the abyss of Nu on the first day. Together with Thoth, they charted the daily course of the sun god Ra. She is sometimes called the 'Eye of Ra' or the 'Daughter of Ra'.
Maat plays an important part in the Book of the Dead.
It was in the, Duat, the Hall of Maat, that the judgement of the dead was performed. In Egyptian mythology, Duat, or Tuat, Akert or Amenthes is the underworld, where the sun traveled from west to east during the night and where dead souls were judged.
Those people with good, (and pure), hearts were sent on to Osiris in Aaru. The weighing of the heart, pictured on papyrus, in the Book of the Dead, typically, or in tomb scenes, shows Anubis overseeing the weighing, the "lion-like" Ammit seated awaiting the results and the eating of the heart, the vertical heart on one flat surface of the balance scale, and the vertical Shu-feather standing on the other balance scale surface.

