You can only work for people that you like. It took me a long time to learn this rule because at the beginning of my practice I felt the opposite. Professionalism inferred that you didn’t necessarily have to like the people that you worked for, and should maintain an arms length relationship to them. As a result, I never had lunch with a client or saw them socially. Some years ago I realised that I was deluded. In looking back, I discovered that all the work I had done that was meaningful and significant came out of an affectionate relationship with a client. Affection, trust and sharing some common ground is the only way good work can be achieved. Otherwise it is a bitter and hopeless struggle.

From 10 Things I Have Learned (archive) by Milton Glaser, 2002