The term 'Source of Wisdom' can be broken down into three crossword solutions: ORACLE (6 letters), SAGE (4 letters), and Tribal Elder (11 letters). An ORACLE is a person or agency considered to be a source of wise counsel or prophetic opinion. A SAGE is a person renowned for wisdom and experience. A Tribal Elder is an older member of a tribal community who is respected for their wisdom and experience. All three terms refer to people who are seen as wise and experienced, and are often consulted for advice.