Scientific knowledge is higher than practical or productive knowledge. The enjoyment of scientific knowledge is a momentary glimpse of God's unchanging and eternal activity. God is form without matter. The universe needs and admires God. The city needs the ruler and admires the scientist.
Violence is natural interference with natural striving.
Artificial production is natural for human beings. Fulfillment includes independent activity and continuation of the species. Human fulfillment includes both individual and common good. Perception knows that a thing is. Every form, is in a sense, an unmoved mover that attracts and motivates life.