That was my challenge as a composer. Like with anything, to keep yourself interested in doing what you do, you set yourself challenges. So I said, Okay, I'll try to write a hundred tunes in a year.

If the challenge to fight was there, I always took it.

I may have had a lot of luck in my life, but I still need to find a challenge in the game.

My challenge was even greater as a journalist, because this was happening in my own backyard.

My greatest challenge has been to change the mindset of people. Mindsets play strange tricks on us. We see things the way our minds have instructed our eyes to see.

International terrorism is throwing down a challenge, and not just to Russia.

I regard the writing of humor as a supreme artistic challenge.

The only use of an obstacle is to be overcome. All that an obstacle does with brave men is, not to frighten them, but to challenge them.

The great challenge working on this show for me is wearing polyester all day long and having the worst haircut known to man at the top of my head and sitting under fluorescent lights. That is America, people. Polyester, bad haircuts, under fluorescent lights.

I have to go on being a priest and bishop, that is, to celebrate God and what God has done in Jesus, and to offer in God's name whatever I can discern of God's perspective on the world around - something which involves both challenge and comfort.

Pure mathematicians just love to try unsolved problems - they love a challenge.

That's really what was wonderful for me growing up, since I got to know so many of the songwriters who liked me and thought I had talent. They would then tell me how to read a lyric and sing a song, and challenge me to try and find a different end to a song.

I didn't want to write a biographie romancee especially since I already write novels, nor did I want to challenge the rules of the biography game, arbitrary as those rules might be.

Journalism: an ability to meet the challenge of filling the space.

As a 22-year Army Veteran who served in Operations Desert Storm and Iraqi Freedom, and as a Civilian Advisor to the Afghan Army in Operation Enduring Freedom, I understand both the gravity of giving the order, and the challenge of carrying it out.