What is the highest architectonic art/science according to Aristotle?

Aristotle articulates the concept of the highest architectonic art or science as the art/science of Happiness, which he refers to as 'eudaimonia.' In his ethical writings, particularly in the "Nicomachean Ethics," he argues that all human activities aim toward some good, and the highest good is that which is pursued for its own sake rather than as a means to an end. Happiness, understood as the fulfillment of our purpose and the realization of our potential as rational beings, embodies this ultimate goal.

In this context, other arts or sciences, such as those related to wealth, pleasure, or honor, can influence our pursuit of happiness but are not in themselves the highest goals. They can contribute to a flourishing life, yet they are subordinate to the pursuit of happiness, which encompasses a holistic view of human well-being. Ultimately, for Aristotle, living a life of virtue aligns with achieving true happiness, making it the highest and most architectonic.

Therefore, the focus on the art/science of Happiness as the greatest of pursuits aligns with Aristotle's philosophy that centers on human flourishing as the primary aim of life. This understanding emphasizes the significance of virtue and moral development in achieving a fulfilling life.