If you diversify your anchor text and stick to these seven link building tips your rankings will skyrocket. Beating the Penguin isn’t about being lucky; it’s about smart link building.from 7 link-building tips after the penguin update
Another one I like is:
Try to think about building links as a way of connecting to ‘colleagues’ working within the same industry. This mindset will serve you far better than just spamming blogs for links; the effects will be longer lasting, far more genuine, and ultimately fruitful.from SoccerWidow's article Link building and back-links which features some other great quotes, too.