User Control · Throughout iOS, people—not apps—are in control. An app can suggest a course of action or warn about dangerous consequences, but it’s usually a mistake for the app to take over the decision-making. The best apps find the correct balance between enabling users and avoiding unwanted outcomes.

Clarity · Throughout the system, text is legible at every size, icons are precise and lucid, adornments are subtle and appropriate, and a sharpened focus on functionality motivates the design.

Clarity · Negative space, color, fonts, graphics, and interface elements subtly highlight important content and convey interactivity.

Deference · Fluid motion and a crisp, beautiful interface help people understand and interact with content while never competing with it. Content typically fills the entire screen, while translucency and blurring often hint at more.

Deference · Minimal use of bezels, gradients, and drop shadows keep the interface light and airy, while ensuring that content is paramount.

Depth · Distinct visual layers and realistic motion convey hierarchy, impart vitality, and facilitate understanding. Touch and discoverability heighten delight and enable access to functionality and additional content without losing context. Transitions provide a sense of depth as you navigate through content.

Aesthetic integrity · It represents how well an app’s appearance and behavior integrate with its function. For example, an app that helps people perform a serious task can keep them focused by using subtle, unobtrusive graphics, standard controls, and predictable behaviors.

Aesthetic integrity · An immersive app, such as a game, can deliver a captivating appearance that promises fun and excitement, while encouraging discovery.

Consistency · A consistent app implements familiar standards and paradigms by using system-provided interface elements, well-known icons, standard text styles, and uniform terminology. The app incorporates features and behaviors in ways people expect.

Direct Manipulation · The direct manipulation of onscreen content engages people and facilitates understanding. Users experience direct manipulation when they rotate the device or use gestures to affect onscreen content. Through direct manipulation, they can see the immediate, visible results of their actions.

Feedback · It acknowledges actions and shows results to keep people informed. The built-in iOS apps provide perceptible feedback in response to every user action.

Feedback · Interactive elements are highlighted briefly when tapped, progress indicators communicate the status of long-running operations, and animation and sound help clarify the results of actions.

Metaphors · People learn more quickly when an app’s virtual objects and actions are metaphors for familiar experiences—whether rooted in the real or digital world.

Metaphors · They work well in iOS because people physically interact with the screen. They move views out of the way to expose content beneath. They drag and swipe content. They toggle switches, move sliders, and scroll through picker values. They even flick through pages of books and magazines.

User Control · An app can make people feel like they’re in control by keeping interactive elements familiar and predictable, confirming destructive actions, and making it easy to cancel operations, even when they’re already underway.

To choose art means to turn one's back on the world, or at least on certain of its distractions.

My so-called 'reservations' and personal comfort zones can't define my work. That's not being professional. I feel that even if an actor is cast for the lead role or for any other part in the film, it is his job to do the film and not create an issue.

If you can afford to advertise, you don't need to.

My children were educated in what were then Chinese schools, and they learned English as a subject. But they made up when they went to English-language universities. So they didn't lose out. They had a basic set of traditional Confucian values. Not my grandchildren.

Do some research on the effects of television and your brain, and I promise you you'll have a decision to make when it comes to television, especially with what you watch.

Deployment keeps us apart but love keeps us together.

The words spoken by the leader of the free world can expand the frontiers of freedom or shrink them. When Ronald Reagan called on Gorbachev to "tear down this wall," a surge of confidence rose that would ultimately breach the bounds of the evil empire.

The great lesson I get from 'Moby-Dick' is that when the times are bad, when there is great foreboding, there are still ways to go about living. It's through Ishmael that I find a kind of overall cosmic approach to a meaningful life in this meaningless world.

I think purpose is the most important thing because once you understand that, everything else becomes easy.

Hearts will never be practical until they are made unbreakable.

Some people might say, 'Can we afford it?' I think that's asking the wrong question... We should instead be asking, 'Can we really afford not to try?'

The soul is a very perfect judge of her own motions, if your mind doesn't dictate to her.

My daughter is very strong-willed and is a great kid. She doesn't drink. She doesn't smoke. She doesn't fold to peer pressure. I think how affectionate my wife and I have been with her over the years all plays into that. She realizes the more people she is exposed to that kids who have both parents around grow up to be much better people.

I think that's one of the first things you'd say if you met me: that I am just nice and smiley. And that's how I might appear when I'm not competing. But I'm totally different when it comes to sport. It's just something that seems to be within me. It's not external or visual. But it's within me.

Though actually the work of man's hands - or, more properly speaking, the work of his travelling feet, - roads have long since come to seem so much a part of Nature that we have grown to think of them as a feature of the landscape no less natural than rocks and trees.

Chimpanzees are endangered. Severely.

According to the papers, I'm miserable, alienated, and on the brink of resignation. But that's simply not where I am.

I just always wanted to be a singer. My mom said I was even singing in my cot!

I wish I could do a lot of things different. I'm not going to tell you what they are, but if I had a list of all my films right now, I'd go, 'Okay, I'll cross that one out and cross that one out and cross that one out and cross that one out.' Really. But I've made over 40 films. How can I not have some losers in there?

When I say I love you, please believe it’s true. When I say forever, know I’ll never leave you. When I say goodbye, promise me you won’t cry. Because the day I’ll be saying that would be the day I die.

There is a silence, the child of love, which expresses everything, and proclaims more loudly than the tongue is able to do.

We, too, must change as circumstances evolve.

The only people I really hate are parking attendants.

You want the book to be special, and they are not always going to be special, but at least you want that to be the ambition. So the only way that happens is if you are not pressing to write a book.