Here are some ideas that seem to have remained true throughout my career. You could call it a philosophy, but I wouldn't since I'm willing to drop or revise any tenant as needed. Still, the work I'm most proud of usually touches on all five of these.

1. Treat people well.
2. Lead culture (as best as you can) rather than following trend.
3. Keep it to a human scale.
4. Opportunities look a lot like risk until you see it in hindsight.
5. You are responsible for the objects and ideas you help put into the world.

Was literally combing through my bookmarks folder in preparation for an Intro to Interaction Design course when I saw this post. I'd like to contribute: https://www.ibm.com/design/language/