Paul Greengard was a towering figure in neuroscience, deeply invested in unraveling the complexities of neuronal communication.

His work provided a molecular and neurochemical foundation for understanding a range of conditions, including Parkinson's disease, Alzheimer's disease, schizophrenia, and depression.

His elucidation of signal transduction in neurons highlighted the role of protein phosphorylation in synaptic transmission, which was pivotal for advancing pharmacotherapy for several neurological and psychiatric disorders. Greengard's legacy lies in his exhaustive research, which spanned over decades and paved the way for novel treatments and therapies.

He was elected as member of the European Academy of Engineering in 1992.