Paul is an accomplished medicinal chemist in the neuroscience area, having led multidisciplinary scientific teams that delivered 8 clinical candidates. After 28 years at Eli Lilly, he joined the Roosevelt University College of Pharmacy, and after 5 years, he moved to the Medical College of Wisconsin Pharmacy School. His research efforts resulted in 57 issued US patents, 121 peer-reviewed publications, and 55 invited lectures on his research around the world. He has a Ph.D. in synthetic organic chemistry from the University of Wisconsin, Madison.