Tatio Viana, a self-taught artist from Madrid, left a decade-long career in advertising to follow his passion for illustration in 2000. Since then, he has breathed life into the pages of math, history, science, and literature textbooks with his rich, vivid illustrations. Outside of the studio, you’ll most likely find Tatio swaying to jazz, devouring a book, or laughing with his four-year-old son, Elías.