5. The logical principles
1. Principle of identity
We can say that showing it we make to see the truth based on another previous thuth and clearer.
The logical principles are the first thruths in which are based all the others. It is allowed without hesitation because they are obvious and clear.
They are four: principle of identity, principle of contradiction, principle of the third excluded and principle of enough reason.
The principle of identity says that what is really. Example: the table is the table. The things are identical to themselves.
In a judgement, if the predicate is identical to the subject, it is really true. I am me. It is clear and obvious.