Answer: leibniz

AnswerCrossword Clue
LEIBNIZMathematician-philosopher Gottfried who espoused the phrase "best of all possible worlds"
LEIBNIZGerman co-discoverer of calculus
LEIBNIZVon ..., prototype of Dr. Pangloss.
LEIBNIZPhilosopher who coined the phrase "the best of all possible worlds"
LEIBNIZ"The best of all possible worlds" philosopher
LEIBNIZMathematician and philosopher who coined the phrase "the best of all possible worlds"