The image depicts an owl with a graduation cap and book stack, which is supposed to represent a symbol of wisdom. I used an OCAL clipart called "Book Stack-Pile de livres" uploaded by cyberscooty. The original images of the owl and cap are from pixabay.com. Thanks.
貓頭鷹作為智慧的象徵
book、book-stack、cap、cyberscooty、favourites1、graduation-cap、owl.bird.wisdom、pixabay、remix+171409、symbol、yamachem
書、書棧、頭、cyberscooty、favourites1、畢業帽、owl.bird.wisdom、pixabay、混音+ 171409、符號、Yamache米
資料來源：openclipart ( https://openclipart.org/ )