Hmm that's a hard one! Probably a quote from The Book of Exhortations used by the writer José Saramago which goes like this: "If you can see, look. If you can look, observe". Because "the worst blind, is the one who doesn't want to see" and sometimes we're missing things which are great and that are right in front of us and I learned to observe every little detail about everythig and that made my life better I guess.