The Preacher turned his mind towards different philosophies to find meaning, such as materialism (2:19-20), and even moral codes (including chapters 8-9).
Ibinaling ng Mangangaral ang kanyang isip sa iba't ibang pilosopiya upang matagpuan ang kahulugan ng buhay, gaya ng materyalismo (2:19-20), at maging sa mga tuntuning pangmoralidad (chapters 8-9).