The soul would have no rainbow if the eyes had no tears and other native american proverbs

is an excellent book by Guy A Zona (isbn 0-671-79730-1). As usual I'm going to quote from a few pages:
I seek strength no to be greater than my brother, but to fight my greatest enemy - myself. [Tribe unknown]
The more you give, the more good things come to you. [Crow]
The song is very short because we understand so much. [Navajo]
If you see no reason for giving thanks, the fault lies in yourself. [Minquass]
You are never justified in arguing. [Hopi]
No answer is also an answer. [Hopi]
Every fire is the same size when it starts. [Seneca]
The frog does not drink up the pond in which he lives. [Sioux]
Seek wisdom, not knowledge. Knowledge is of the past, wisdom is of the future. [Lumbee]
Force, no matter how concealed, begets resistance. [Lakota]
Everything has a beginning. [Kiowa]
God teaches the birds to make nests, yet the nests of all birds are not alike. [Duwamish]