Tarot Emperor is depicted as pharaoh of Ancient Egypt.
Lord of both worlds, Upper and Lower Egypt, symbolized by the plants of these two regions, the lotus and the papyrus. Metaphysically these two worlds are the seen and unseen, the conscious and the subconscious.
For a deeper understanding of the cards take time to consider what is occurring in the natural world when the Sun enters Aries. Translate this astrological phenomena as a metaphor to discern its meaning regarding your question.
Interpretation must come from within oneself through listening to one’s own inner voice. Take time to read Julian Jaynes thought provoking book The Origin of Consciousness in the Breakdown of the Bicameral Mind to understand the impact of what lies behind this simple statement.