The first duty towards children is to make them happy. If you have not made them so, you have wronged them. No other good they may get can make up for that.
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)