It’s hard to be smart. It stretches the brain — and that hurts. Sometimes, it’s best to use someone else’s brain and just look smart. (I’m good at that.)

Luckily, I’ve discovered that pretty much all marketing knowledge can be found in just 30 quotes— which I have provided here for you. Full Disclosure: I featured 12 of the 30 quotes in a column I wrote in April of last year, but they were so good, I decided to include them again here.

Learn from them. Stare them.  Most aspects of marketing are covered, including advertising, branding, creativity, content, customer focus, motivation, social media, marketing wisdom and writing. So, give your brain a rest and enjoy.

Nobody counts the number of ads you run; they just remember the impression you make. – Bill Bernbach

Nobody reads ads. People read what interests them, and sometimes it’s an ad. – Howard Luck Gossage

Stopping advertising to save money is like stopping your watch to save time. – Henry Ford

We elect and buy from people we like. Likability is number one. We also need to believe they are honest, and have our best interests at heart. – George Farris

Conversation with customers will increase sales, even if the product or service is never mentioned. – George Farris

Customers don’t care about the labor pains; they want to see the baby. – Tim Williams

Don’t find customers for your product. Find products for your customers. – Seth Godin.

If you are the CEO, you are the brand. – George Farris

Don’t settle. Don’t finish crappy books. If you don’t like the menu, leave the restaurant. If you’re not on the right path, get off it. – Chris Brogan

Nothing is impossible just because it’s never been done. – Anonymous

Our job is to find the truth and present it well. – Leo Burnett

Our job as marketers is to understand how the customer wants to buy and help them do so. – Bryan Eisenberg

Investigate. Innovate. And then communicate. – George Farris

I’ve learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel. – Maya Angelou

Good marketing makes the company look smart. Great marketing makes the customer feel smart. – Joe Chernov

A conclusion is the place where you got tired of thinking. – comedian Steven Wright

As a rule, if you want to be a great writer you have to be a great reader. – Mark Gilroy

If you steal from one author, it’s plagiarism; if you steal from many, it’s research. – Wilson Mizner

Martin Luther King did not say ‘I have a mission statement.’ – Simon Sinek

On average, five times as many people read the headline as read the body copy. When you have written your headline, you have spent eighty cents out of your dollar. – David Ogilvy

When it comes to social media, focus on advice and education first, information second and entertainment last. – George Farris

Social media creates communities, not markets. – Don Schultz

Social media has changed marketing. Now it’s not just about what you say. It’s also what your customers are saying to everyone else. – George Farris

Business has only two functions – marketing and innovation. – Milan Kundera

Different sells better than better. – George Farris

The secret of change is to focus all of your energy not on fighting the old, but on building the new. – Dan Millman

Creativity without strategy is called art; creative with strategy is called advertising. – Jef L. Richards

Non-profit organizations have to build ships — memberships, relationships and sponsorships. – George Farris

You need to create ridiculously good content — content that is useful, enjoyable and inspired. – Ann Handley

If everyone’s thinking alike, then somebody isn’t thinking. – General George Patton

That’s all you need to know for at least a year. And you can quote me on that.