Be a source of _____.
源（みなもと）になろう。
You can be a source of anything if you choose to.
Inspiration. Encouragement. Motivation. Creativity. Gratitude. Innovation. Fairness.
Or…
Destruction. Discouragement. Obstacle. Boredom. Hatred. Stagnation. Discrimination.
Or…
Choose to be nothing, and blindly follow authority or someone else.
It’s YOUR choice.