I like this and on all these dreadful quotes websites it's attributed to “Clara Ortega”. Searching the quote or the name just yields more dreadful quotes websites. Who is Clara Ortega??
There is mention of a Clara Ortega here http://en.wikipedia.org/wiki/Rancho_San_Ysidro but no indication at all if it is the same.
EDIT: I know it's not especially groundbreaking or elegant but if you have a sibling you feel that it is true about then it does make you smile.
Source unknown. Googling points to tumblr.
When asked about what surprised him most about humanity he replied:
“Man surprised me most about humanity. Because he sacrifices his health in order to make money. Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived.” Dalai Lama