Inspirational quotes - How effective are they?

Well for a start, I enjoy reading them. Some empower me, while some leave me feeling very deflated. Perhaps some feel too ambitious or a bit 'tongue in cheek'. But often I will read one and think that simply by just reading it is not enough. Is it a case of achieving a sense of realism with these quotes or knowing deeply your capabilities?

Take a look at these 2 quotes below - which one inspires you the most? Perhaps nether?

What are your views on quotes? are they inspirational or demotivating? Is it a personal thing?