3. Ways of being
1. Real being and being of reason
There are innumerable beings or entities in the world, but we can group together in several types. There are real beings and beings of reason, material and spiritual, necessary and contingent.
Real being exists out of mind, and being of reason is built in mind and does not exist out of her. For instance, some real beings are a pen, a computer, a table; a Siren, a triangle, honesty and wisdom, are being of reason.
Being of reason can be: negative, ideal, fictitious
Negative beings of reason are those built by reason without any correspondence with any being outside. For instance, not-white, not-table and the nothingness. They are negative beings of reason, because in fact there are not such objects, they do not exist due to the fact that they are negations of being. What really exists is white, table and being, but not their negations.
Abstract ideas are ideal beings of reason, but they do not exist in reality. For example, there can be tables with triangular, square or circular table-tops, but triangle, square and circle do not exist anywhere.
Fictitious being of reason is built by our imagination (mixing the real) producing of pretending beings that do not exist. For example: a dragon, a Siren, a fairy, a witch, are fictitious being of reason.