Flexing my Innate Ideas

This argument focuses on Plato's theory of Innate Ideas.  When a human body harbors an eternal mind and soul, experiences must be removed from emotion and the quest for Reason is the ultimate purpose of this embodiment.  Through this separation and removal we are able to recollect the prior knowledge our soul obtained throughout its everlasting journey.  The basis for any individual's "innate ideas" are determined by an undefinable realm where the Good and the Reason are paramount. This is to say then, that our (I will call them pure) ideas of life/purpose/humanity/experience/ and the state of our natural being continually emerge, consistent with the transcendence we experienced in a previous time.  How does this theory relate to the broader concepts we are familiar with in our material world? With  varying opinions of what is acceptable correlating with our moral standpoints, relationships, and personal justices how can is be concretely argued that we are all of the same Form? Isn't the very essence of humanity and natural will to express individual perspectives we contrive from being emotionally and intellectually aware?