Complex sentence: Following the experimental and synthetic methods, he brought together a large number of instances of inherited peculiarities; he pays particular attention to the physical element of mental life, ignoring all spiritual or nonmaterial factors in man.
Split into simpler sentences: Following the experimental and synthetic methods, he brought together a large number of instances of inherited peculiarities. He payed particular attention to the physical element of mental life, ignoring all spiritual or nonmaterial factors in man.