Siegel+Gale's Alan Siegel Moves On From Namesake Agency | Adweek

This is both bad news and good news.

The bad news (emphasis added):

Alan Siegel, the driving force behind the "plain English" movement of communications simplification, is leaving his namesake branding firm after 43 years.

The good news (emphasis added):

The Siegel+Gale chairman ... now plans to devote his time to personal nonprofit marketing efforts, research and writing.

The article explains that Siegel pushed in the '70s for using plain English in complex legal documents produced by business and government. He also advocated clarity in government communications and in business communications for insurance policies, bank loans and mutual funds.

As for what's next for Siegel, the article says:

His new projects include working on a new Cornell University corporate identity for a science graduate school on NYC's Roosevelt Island; communications work for New York University in its efforts to become a global educational entity; the Alzheimer Foundation of America and the Lupus Foundation of America.

For more information on using plain English (aka plain language), check out Garbl's Plain English Writing Guide.