In some cases, the sage goes beyond mere knowledge and understanding to reflection and questioning -- these become the targets of philosophical sagacity.
His "oeuvre" is voluminous, diverse, and original; although some of his scientific writings contain unconfirmed theories and inaccuracies, his expertise, sagacity, and groundbreaking researches are widely acknowledged.
Philosophical sagacity is a sort of individualist version of ethnophilosophy, in which one records the beliefs of certain special members of a community.
