Comenius introduced a number of educational concepts and innovations including pictorial textbooks written in native languages instead of Latin, teaching based in gradual development from simple to more comprehensive concepts, lifelong learning with a focus on logical thinking over dull memorization, equal opportunity for impoverished children, education for women, and universal and practical instruction. Besides his native Bohemian Crown, he lived and worked in other regions of the Holy Roman Empire, and other countries: Sweden, the Polish–Lithuanian Commonwealth, Transylvania, England, the Netherlands and Hungary.