What you’re probably looking for is a mixture of the content manager and elements on the page.
Use the content manager to store all of the info, using the text field for Quotes and the Date field for the date.
Then using wixDataQuery (https://www.wix.com/velo/reference/wix-data/wixdataquery/eq) check to see if any of the entries in the database equal the current day, and then use that to display the quote in the text field