Answer:
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
What has 4 eyes but canβt see?
Being able to interpret the letters on this screen proves that you have this quality.
I bind it and it walks. I loose it and it stops.
Crooked as a rainbow, and slick as a plate, Ten thousand horses can't pull it straight.
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?