Food for thought:

All intelligent thoughts have already been thought; what is necessary is only to try to think them again. 
 --Johann Wolfgang von Goethe

I love this quote!  Definitely easier said than done, however.

And this one too:

Whatever you can do or dream you can, begin it.  Boldness has genius, power, and magic in it.  --Johann Wolfgang von Goethe 

Carry on!