The Noun Project catalogs and displays recognizable, simple symbols in an accessible way.
This is a very cool project archiving common symbols that are globally recognizable, free, and simple - a useful resource for designers or anyone who needs a good visual language reference.

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Andrea — Apr 4, 2011
Some professionals wear their code of ethics on their fingers.
When we last left off, I was discussing the notion that a of code of ethics is a form of branding. I postulated that, in much the same way that a logo or a slogan represents a promise to one's customers and co-workers, a code of ethics performs a similar function -- albeit in a non-visual way.
Today, I want to present an example of a professional code of ethics that happens to have a visual expression.
The Order of the Engineer is a voluntary society of professionally-trained engineers who opt to take up the Obligation of an Engineer. The purpose of this enterprise is to remind engineers of their service to the public and to form a common bond among those in the profession.
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Nick — Mar 18, 2009