My main page on quotes is Quotes to Make You Think. Additional ones can be found under the Quotes tag.

Everyone sees what you appear to be, few experience what you really are. — Niccolò Machiavelli

Do not look for approval except for the consciousness of doing your best. — Bernard M. Baruch

When I was young, I used to admire intelligent people; as I grow older, I admire kind people. — Abraham Joshua Heschel

His books were the closest thing he had to furniture and he lived in them the way other men live in easy chairs. — Laura Hillenbrand

Thanks to Janice, heirloomgrit.