Henri Delacroix
Henri Delacroix ( 2 December 1873 , Paris – 3 December 1937 , Paris ) was a French psychologist , "one of the most famous and most prolific French psychologists working at the beginning of [ the twentieth ] century . " 
<triplet> Henri Delacroix <subj> 2 December 1873 <obj> date of birth <subj> 3 December 1937 <obj> date of death