Answer:
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
Whoever makes it, tells it not. Whoever takes it, knows it not. And whoever knows it wants it not
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
I bubble and laugh and spit water in your face. I am no lady, and I don't wear lace.
People take me on walks and I run and have fun. What am I?