Inspiration can come from whispering advice, but it also can come from speaking up.
One can be inspired by speeches of good orators:

Eleanor Roosevelt

Emma Watson

Jane Goodall

Malala Yousafzai

Margaret Thatcher

Maya Angelou

Michelle Obama

Ruth Bader Ginsburg

Dalai Lama

Barack Obama

Martin Luther King

John F Kennedy

Nelson Mandela

David Cameron