Oscar Mandel, a distinguished professor emeritus of literature at the California Institute of Technology (Caltech), passed away on May 20, 2026, at the age of 99. Born on August 24, 1926, in Antwerp, Belgium, he fled to New York City during World War II, where he later pursued higher education, earning degrees from New York University, Columbia University, and Ohio State University. Mandel joined Caltech in 1961, becoming a full professor by 1980 and dedicating over 40 years to teaching English and comparative literature. He was a prolific writer, producing works in French and English, and was known for his translations and dramatic productions. His contributions extended beyond literature; he was a passionate advocate for integrating the arts into the scientific curriculum, believing that a well-rounded education should include literature and aesthetics. Diana Kormos-Buchwald, a colleague at Caltech, praised Mandel for his intellectual rigor and commitment to the humanities. After retiring in 2003, he continued to influence students, emphasizing the importance of literature in cultivating a broader understanding of the world. Mandel's legacy is one of bridging the gap between science and the arts, enriching the educational experience for generations of Caltech students.