If the work is worthwhile, then whether we can complete it or not, it's worth making the attempt. That's why courage is important.
Dalai LamaBasically, the Buddhist attitude is that you should not accept certain things through sheer faith. And for that you need a skeptical attitude. Buddha himself made this clear to his followers. He said you should not accept those things I taught out of respect for me, but rather through investigation by yourself.
Dalai Lama