After graduating college in Montreal, Arnold moved to Israel where he established a rose nursery devoted to hybridizing new garden varieties. Eventually he returned to academic studies earning a Ph.D. in Health and Human Services. He developed an award-winning discipline in psychological diagnosis extending from the medical-genetic science of Dermatoglyphics. Two textbooks he had written on the subject were published in Toronto. The first, appearing in 1983, became a collector’s item. The second, published in 2004, is reaching his pupils in close to 80 countries. Writing remains the author's central activity. He speaks of The Wrestler from Montreal as his richest creative experience.