A bespectacled middle-aged man in a button-down shirt and tweed jacket stands with his arms crossed, looking directly at the camera with a stern expression, leaning slightly on a wooden lectern in front of a blackboard filled with complex equations and diagrams, with a dimly lit library bookshelf in the background.

AI Photo

A bespectacled middle-aged man in a button-down shirt and tweed jacket stands with his arms crossed, looking directly at the camera with a stern expression, leaning slightly on a wooden lectern in front of a blackboard filled with complex equations and diagrams, with a dimly lit library bookshelf in the background.