I was starting to become impotent through this diet and couldn't perform. How many people who are taking the little blue pill if they started to change what they are eating most of the time could change the way their sex life is?

Biological engineering is not necessarily understanding systems but rather I want to be able to design and build biological systems to perform particular applications.

Many things difficult to design prove easy to performance.

Constantly risking absurdity and death whenever he performs above the heads of his audience the poet like an acrobat climbs on rhyme to a high wire of his own making.

Bravery is the capacity to perform properly even when scared half to death.

I've been looking at some video clips on YouTube of President Obama - then candidate Obama - going through Iowa making promises. The gap between his promises and his performance is the largest I've seen well since the Kardashian wedding and the promise of 'til death do we part.

On my best days such as when I was a junior in high school coming off a 42-point performance and near triple-double my dad was there to tell me I haven't arrived yet and bring me back to reality.

Whenever I did a good performance my Dad and my uncles who were rabid movie fans took me to the movies. There began my underlying love affair with film.

Dad really had little to do with the songs except to perform them.

I'm worried because of my mother she's going to see my performance and she's quite hard. She's going to see me naked. And my Dad woah. Yeah they're going to see me like a woman you know?

I knew I really made it when my dad saw me in London and after the performance he had no notes to me and just said 'You are doing your own thing and I am proud of you.'

I wanted to perform well for my mom and dad because in high school I didn't have a job. My brothers they worked at Pizza Hut or places like that but sports that was my way of giving back.

My dad is a Jack Nicholson lookalike and a frustrated performer my mother's into reading and poetry. I suppose the thing I owe them most is my confidence.

The memoirs that have come out of Africa are sometimes startlingly beautiful often urgent and essentially life-affirming but they are all performances of courage and honesty.

And as a child I was filled with passionate admiration for acts of civic courage I had seen performed by an elderly military doctor who was a friend of my family.

When you see people who are really good at game shows the one common attribute is a cool head under pressure: an ability to perform as well in the studio surrounded by lights and noise as you do on your couch.

Eventually I believe current attempts to understand the mind by analogy with man-made computers that can perform superbly some of the same external tasks as conscious beings will be recognized as a gigantic waste of time.