Plato explains the causal relationship between Forms and objects in the world by saying that things participate in the Forms. It is not entirely clear what he means by this, but there are three likely possibilities of what Forms are according to this claim. (1) Forms as paradigms: Forms are the perfect instance of whatever they represent. For instance, the Form of Justice is the paradigm of justice, the one, most perfect instance of justice in this world. All other things that are just are just only insofar as they emulate, or are similar to, this Form of Justice. (2) Forms as universals: Forms are that which all instances of the Form have in common. The Form of Justice is that quality which all just people have in common. According to this interpretation, one participates in the Form of Justice by sharing in that quality of justice. (3) Forms as stuffs: Forms are distributed throughout the world. The Form of Justice, under this interpretation, is not some separate thing, but is rather the sum total of all the instances of justice that we might find in the world. There is a little bit of justice in me, there is a little bit of justice in you, and if we were to gather all these little bits of justice together, we would have the Form of Justice. Thus, each one of us participates in the Form of Justice by having a bit of the Form in us, like sharing a small piece of a very big pie.