Princeton's President requested that all of Einstein's lectures be highly technical, reflecting the complexity of his work. During these sessions, Einstein presented over 125 intricate equations, delivering his lectures in German while illustrating concepts on a blackboard. This approach made the material challenging for many students to grasp.

One student candidly expressed that despite sitting in the balcony, he felt the content was beyond his understanding. This highlights the daunting nature of Einstein's presentations, demonstrating the gap between his genius and the ability of students to fully comprehend his theories.