Update opportunities.md

Author: ericdammannjr

_pages/opportunities.md

@@ -24,6 +24,11 @@ are especially encouraged to apply!
 
 If you are interested in joining, contact Dr. Jorge Lorenzo-Trueba via email to set up a meeting.
 
+<blockquote>
+"*Do not think that what is hard for you to master is humanly impossible; but if a thing is humanly possible, consider it to be within your reach.*"
+ - Marcus Aurelius
+</blockquote>
+
 "*Do not think that what is hard for you to master is humanly impossible; but if a thing is humanly possible, consider it to be within your reach.*"
  - Marcus Aurelius