The full collection of Wisdom Quotes is here. I began the online collection in the mid-1990s, simply as a way to store quotes I might re-use or want to find later. Then I realized that there were many readers! I lost the domain name I originally used, the site of my collection is at WisdomQuotes.net and not at the old domain.
You’ll also find quotes within that site on the topic of wisdom here: Wisdom Quotes – Wisdom Quotes