The shortest answer is doing the thing.

Knowledge without education is but armed injustice.

There were open source projects and free software before Linux was there. Linux in many ways is one of the more visible and one of the bigger technical projects in this area, and it changed how people looked at it because Linux took both the practical and ideological approach.

Forget sex or politics or religion, loneliness is the subject that clears out a room.

Human greatness does not lie in wealth or power, but in character and goodness. People are just people, and all people have faults and shortcomings, but all of us are born with a basic goodness.