In a previous job, I had a boss that I really admired. He's near the end of his career and his experience had made him wise. He was humble, but would chime in as needed. One of my favorites was his ability to bust out short one-liners that would hit the nail on the head. Around the water cooler, we regularly discussed open source. Here are some worth mentioning:
Free like a puppy
This one always made me chuckle. But, it's true in so many ways.