3. Thomas Aquinas’s Twofold Understanding of the Self-Evident
If something is self-evident, the predicate is contained within the subject. Man=rational animal –> Rational animal is an animal. Therefore, it is self-evident. However, you need to know the essence of something. E.g. The essence of man is to be a rational animal. If you do not know the essence of the predicate and the subject, it may be self-evident in itself, but not to you. We cannot know the essence or nature of God in this life.