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.

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.

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.

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.

I never experiment with anything in my books. Experimentation means you don't know what you're doing.

If you watch a group of schoolchildren eating lunch together, you cannot help but notice how it is a comically Lilliputian version of the adult thing - the cocked eyebrows of conversation, the reaching for condiments, the shovelling of food into tiny mouths.

I wouldn't necessarily say that 'Alpha House' or 'Betas' embodied a particular vision of Amazon of the kind of brand or programming they were gonna do. I think those were the first lucky creators who hit it right for them.

It's about personal development. It's about creating your own character and pushing it to the limit. It's about pushing yourself so far out of your own and everybody else's idea of who you are and what you're capable of, that you no longer believe in limits.

If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.

I grew up in a small, strictly-Catholic fishing village on the coast of Wales. The people there have a different attitude to life than those in Hollywood - people stick together more.

People talk about tactics, but when you look at it, tactics are just players. You change things so that the team can get the most out of the skills they have to offer, but you don't go any further than that.

I always thought of vampires, especially the young-adult ones, as a metaphor for sex - sucking blood, forbidden, taboo. I think they just ooze sex. Vampires are all the big themes in life in one attractive, bloodsucking package.

Crime is a logical extension of the sort of behaviour that is often considered perfectly respectable in legitimate business.

Governor Romney is a real hardliner on illegal immigration.

Soon I knew the craft of experimental physics was beyond me - it was the sublime quality of patience - patience in accumulating data, patience with recalcitrant equipment - which I sadly lacked.

I have a trend of my own.

Who cares and remembers if my last film was a success? I need to work harder.

A general definition of civilization a civilized society is exhibiting the fine qualities of truth beauty adventure art peace.

You'll find boredom where there is the absence of a good idea.

In some cases, managers and employees have secured pensions beyond their original base salary. It is wrong, the people doing it know it's wrong, and we have to put an end to it.

Markets work when people can evaluate the prices and risks of different products, then pick the ones that work best for them. But when the terms of the deal are hidden, competition doesn't work. And customers aren't the only ones who are hurt.

If I do something related to English music, it will be definitely in the direction of R&B and pop.

Disability is often framed, in medical terms, as the ultimate disaster and certainly as a deficit.

My parents were intelligent and encouraging, but at the same time, they were displeased at me becoming a wandering troubadour and wire walker.

No belief or idea is sacred, unless it treats all people as sacred.

I love cash.

Actually, I failed drama in high school because of nerves. I wasn't able to memorize the words. I had complete stage fright.

Retain a calm heart sit like a turtle walk swiftly like a pigeon and sleep like a dog.