Simplicity In Design Quotes by Philip James Bailey, Daniel J. Boorstin, David Gelernter, Jonathan Ive, Douglas Adams, Tony Hoare and many others.

Simplicity is natures first step, and the last of art.
The greatest obstacle to discovery is not ignorance – it is the illusion of knowledge.
Beauty is more important in computing than anywhere else in technology because software is so complicated. Beauty is the ultimate defense against complexity.
Our goal is to try to bring a calm and simplicity to what are incredibly complex problems so that you’re not aware really of the solution.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult.
Simplicity in character, in manners, in style; in all things the supreme excellence is simplicity.
Have nothing in your house that you do not know to be useful, or believe to be beautiful.
The cost of adding a feature isn’t just the time it takes to code it. The cost also includes the addition of an obstacle to future expansion. … The trick is to pick the features that don’t fight each other.
Making the simple complicated is commonplace.
Clutter and confusion are failures of design, not attributes of information.
Controlling complexity is the essence of computer programming.
Simplicity is somehow essentially describing the purpose and place of an object and product.
A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.
It takes a touch of genius – and a lot of courage to move in the opposite direction.
That’s been one of my mantras – focus and simplicity. Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple. But it’s worth it in the end because once you get there, you can move mountains.
Simple things should be simple and complex things should be possible.