We can't think of a single climate activist our children look up to more - and at every turn we become more impressed with Greta Thunberg.  Passionate, articulate, gritty, and brave - as a young teen Greta became the face of global climate organizing.  As only a young person can, she's spoken truth to power - and the world is better for it.  This quote sums up the wisdom of her activism, and the most important lesson we want to pass on to our kids: you are really never too small to make a difference.