Silicon Valley visionary John Perry Barlow died last night at the age of 70. When he was 30, the EFF founder (and sometime Grateful Dead lyricist) drew up a list of what he called Principles of Adult Behavior. They are:

1. Be patient. No matter what.

2. Don’t badmouth: Assign responsibility, never blame. Say nothing behind another’s back you’d be unwilling to say, in exactly the same tone and language, to his face.

3. Never assume the motives of others are, to them, less noble than yours are to you.

4. Expand your sense of the possible.

5. Don’t trouble yourself with matters you truly cannot change.

6. Expect no more of anyone than you yourself can deliver.

7. Tolerate ambiguity.

8. Laugh at yourself frequently.

9. Concern yourself with what is right rather than who is right.

10. Never forget that, no matter how certain, you might be wrong.

11. Give up blood sports.

12. Remember that your life belongs to others as well. Do not endanger it frivolously. And never endanger the life of another.

13. Never lie to anyone for any reason. (Lies of omission are sometimes exempt.)

14. Learn the needs of those around you and respect them.

15. Avoid the pursuit of happiness. Seek to define your mission and pursue that.

16. Reduce your use of the first personal pronoun.

17. Praise at least as often as you disparage.

18. Never let your errors pass without admission.

19. Become less suspicious of joy.

20. Understand humility.

21. Forgive.

22. Foster dignity.

23. Live memorably.

24. Love yourself.

25. Endure.

Here’s what these principles meant to Barlow:

I don’t expect the perfect attainment of these principles. However, I post them as a standard for my conduct as an adult. Should any of my friends or colleagues catch me violating one of them, bust me.

You can read remembrances of Barlow from the EFF and from his friends Cory Doctorow and Steven Levy. The EFF’s Executive Director Cindy Cohn wrote:

Barlow was sometimes held up as a straw man for a kind of naive techno-utopianism that believed that the Internet could solve all of humanity’s problems without causing any more. As someone who spent the past 27 years working with him at EFF, I can say that nothing could be further from the truth. Barlow knew that new technology could create and empower evil as much as it could create and empower good. He made a conscious decision to focus on the latter: “I knew it’s also true that a good way to invent the future is to predict it. So I predicted Utopia, hoping to give Liberty a running start before the laws of Moore and Metcalfe delivered up what Ed Snowden now correctly calls ‘turn-key totalitarianism.’” Barlow’s lasting legacy is that he devoted his life to making the Internet into “a world that all may enter without privilege or prejudice accorded by race, economic power, military force, or station of birth … a world where anyone, anywhere may express his or her beliefs, no matter how singular, without fear of being coerced into silence or conformity.”

Update: I’ve amended the list slightly from when I first posted it to match more closely an email sent by Barlow to friends on his 60th birthday.