Throughout Pixar’s quarter-century history of feature filmmaking, Docter has established himself as the studio’s philosopher-in-chief. The films he has directed to date — Monsters, Inc.; Up; and Inside Out — deliver simple, poignant observations on the wants and fears of humans, via wild fantastical conceits that bring comedy and action aplenty. The formula was perfected in the wonderful Inside Out, which explores the roiling emotions of a young girl by personifying them as bickering sprites that live in her head.