If you are not embarrassed by the first version of your product, you’ve launched too late.
Reid Hoffman, Co-Founder of LinkedIn
Your product is the way you meet a customer’s need.
Sutha Kamal, Hiring a Great Product Leader
If you’re digging yourself into a hole, the smart thing is to stop digging
Joseph Jaffe, Earn the Bundle, MediaPost’s Online Spin
There is no such thing as a creative genius. There are no brilliant minds or super talent. That’s a myth. The best creatives are the hardest working people.
Adam Kerj
If you can’t solve a problem, it’s because you’re playing by the rules.
Paul Arden

Simplify before you sexify.

Understand the business model:
no service is ever free, you just aren’t paying for it.
http://www.usabilitycounts.com/2013/05/20/six-ways-interaction-designers-should-act-more-like-a-product-manager/
You are already naked. There is no reason not to follow your heart.
Steve Jobs

Go big or go home.  Seriously, just go home and hide under the covers.

Focusing is about saying no. You’ve got to say no, no, no. The result of that focus is going to be some really great products where the total is much greater than the sum of the parts
Steve Jobs
We can all identify the problem. It takes a visionary to see the solution. But it takes an entrepreneur to do something about it.
Naveen Jain, founder of inome and Moon Express