The delicate and intricate pattern of competition and cooperation in the economic behavior of the hundreds of thousands of citizens of Stockholm offers a challenge to the economist that is perhaps as complex as the challenges of the physicist and the chemist.
We must accept life for what it actually is - a challenge to our quality without which we should never know of what stuff we are made, or grow to our full stature.
There's nothing worse - I don't like listening to actors talk about the process, especially when - I mean, for me I've played a lot of guys, dudes, boys in a sense and this was a challenge for me just to play that official character.
I want to take roles that challenge me and I want to like the script and obviously feel connected with the director because the director to me is so important.
Challenge America grants go to the towns and hamlets of this sprawling country, where big touring companies will rarely go, and major actors, actresses, writers and artists may never appear in person.
Together with international unity and resolve we can meet the challenge of this global scourge and work to bring about an international law of zero tolerance for terrorism.
A woman's life can really be a succession of lives, each revolving around some emotionally compelling situation or challenge, and each marked off by some intense experience.
The biggest challenge was trying to convey the story of the making of a film that isn't finished yet - and which won't be finished until the third film, The Return of the King, reaches our cinemas towards the end of 2003!
People might say I'm difficult, but did you ever hear anyone describe a label as 'difficult'? By nature, artists should challenge. When they call you difficult, it is a reflection of the imbalance of power.
