Professor Robert E. Cohen, a renowned chemical engineer and educator, passed away on July 9 at the age of 79. During his more than 40 years at MIT, Cohen made groundbreaking contributions to the fields of polymer science and soft matter, and earned widespread acclaim for his dedication to teaching and mentoring students. Cohen's contributions to polymer science and technology include the establishment of the Program in Polymer Science and Technology (now known as the Program in Polymers and Soft Matter) at MIT, as well as the creation of a unique PhD in chemical engineering practice (PhDCEP) degree. This innovative program combines advanced research with industrial experience and business education. As an educator, Cohen was known for his unique teaching style and his dedication to his students. He guided numerous PhD students and provided them with selfless help and support. His students and colleagues alike praised him as a true mentor and leader. Blogger's Review: The passing of Professor Robert Cohen is a tremendous loss to the scientific community, but his legacy and contributions will continue to inspire and influence future generations of scientists and educators. His humility and dedication to his students serve as a model for us all. Let us remember this scientific giant with respect and gratitude for his contributions and spirit.