Successful entrepreneurs are usually inspired by other successful entrepreneurs. That means that if people don’t have great role models–especially role models in whom they can see themselves–they’re at a big disadvantage.

That’s among the biggest challenges facing women who want to start new ventures. So, with Women’s History Month right around the corner, here are key quotes from 17 amazingly successful women entrepreneurs. Which do you find most inspiring?

1. Sara Blakely

Founder of Spanx, youngest self-made female billionaire in America
“It’s important to be willing to make mistakes. The worst thing that can happen is you become memorable.”

2. Shelia Lirio Marcelo

Founder of Care.com
“I think in terms of evolutions, not revolutions. Failure is not part of my vocabulary.”

3. Wendy Kopp

Founder of Teach for America
“Change is not always a process of improvement. Sometimes it’s a process of invention. When Thomas Edison invented the light bulb, he didn’t start by trying to improve the candle. He decided that he wanted better light and went from there.”

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