This potential is called Buddha-Nature - our true nature,
which is the same as all Buddhas'.

We have various other natures too -
hell nature (nature of fear and hatred),
hungry ghost nature (nature of craving),
animal nature (nature of ignorance),
demi-god nature (nature of jealousy),
and god nature (nature of complacency),
human nature (nature of the realms of existence mixed together).