One of the most lasting pleasures you can experience is the feeling that comes over you when you genuinely forgive an enemy - whether he knows it or not.
Bio: Brian Halligan is an American executive and author. He is a CEO and co-founder of HubSpot, an Internet marketing company based in Cambridge, Massachusetts, and is also a senior lecturer at MIT.
Known for:
Inbound: How to Create Marketing People Love (2014)