Apple

APPLE -  Symbolic of knowledge and found often on the gravestones of educators.   Though the forbidden fruit in the Book of Genesis is not identified, popular tradition holds that Adam and Eve ate an apple from the tree of the knowledge of good and evil in the Garden of Eden.  This may have been the result of Renaissance painters adding elements of Greek mythology into biblical scenes.   The unnamed fruit of Eden thus became an apple under the influence of the story of the golden apples in the Garden of Hesperides.   As a result, the apple became a symbol for knowledge, immortality and temptation.