A middle-aged man with a stern expression and a hint of nostalgia in his eyes, standing in front of a vintage chalkboard filled with mathematical equations, wearing a button-down shirt, glasses, and a weary smile. He has a subtle gray streak in his dark brown hair and a few wisps framing his face, conveying a sense of wisdom and dedication to his craft, with the background blurred to a warm and cozy retro style classroom.

AI Photo

A middle-aged man with a stern expression and a hint of nostalgia in his eyes, standing in front of a vintage chalkboard filled with mathematical equations, wearing a button-down shirt, glasses, and a weary smile. He has a subtle gray streak in his dark brown hair and a few wisps framing his face, conveying a sense of wisdom and dedication to his craft, with the background blurred to a warm and cozy retro style classroom.