1936

for his discovery of cosmic radiation

for his discovery of the positron

for his contributions to our knowledge of molecular structure through his investigations on dipole moments and on the diffraction of X-rays and electrons in gases

for their discoveries relating to chemical transmission of nerve impulses

for their discoveries relating to chemical transmission of nerve impulses

for the power, honesty and deep-felt emotions of his dramatic works, which embody an original concept of tragedy

for his role as father of the Argentine Antiwar Pact of 1933, which he also used as a means to mediate peace between Paraguay and Bolivia in 1935