ideas of potentiality and actuality. An oak tree begins with an acorn. The acorn is not actually an oak tree, but it has the potential of becoming one. That potential is realized when it actually becomes an oak tree. But nothing contains any potentiality unless it first has actuality. Actuality is primary, and it is a necessary condition for potentiality. There can be no such thing as pure or absolute potentiality. Such a “thing” would be potentially anything or potentially everything, but it would