The full use of your powers along lines of excellence. (definition of happiness by John F. Kennedy)

Only two things are infinite, the universe and human stupidity, and I’m not sure about the former. (Albert Einstein)

I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. (Umberto Eco)

I have not failed. I’ve just found 10,000 ways that won’t work. (Thomas Alva Edison)