Analysis:

This quatrain by Saadi Shirazi is a classic expression of romantic longing and admiration. It paints a vivid picture of a lover's devotion and determination.

The Beloved as a Celestial Body: The comparison of the beloved to a cypress and the sun emphasizes their beauty, stature, and radiance. They are idealized and elevated to a divine level.
The Lover's Determination: The lover is determined to see their beloved, even from a distance. This shows their persistence and unwavering devotion.
The Impotence of Obstacles: The lover suggests that while physical barriers might prevent them from being near their beloved, they cannot stop them from admiring from afar. This highlights the power of love to overcome obstacles.

Themes:

Love and longing: The central theme is the poet's deep love and longing for their beloved.
Beauty and admiration: The poet is captivated by the beauty of their beloved.
Determination: The lover is determined to see their beloved, despite any obstacles.
The power of love: Love is depicted as a powerful force that can overcome any obstacle.

Deeper Meaning:

This quatrain captures the universal human experience of longing and admiration. It reminds us of the power of love to inspire and uplift. The image of the lover gazing at their beloved from afar is a timeless symbol of devotion and hope.

This quatrain is a beautiful expression of romantic love. It showcases Saadi's ability to convey complex emotions through simple and evocative imagery.