Never heard of Freequill before.
"True wisdom is not acquired by capturing knowledge, it is earned by acting upon knowledge."
Actually, IME wisdom is only acquired by trying to act on knowledge and failing miserably because of utterly foolish misunderstanding we thought was knowledge, and grasping the actual facts only by dint of recovering from the terrible losses, excruciating pain, staunching the flow of our life's blood from the wounds we have caused ourselves to suffer, and managing to resolve our shame and disappointment and hold our heads up high again despite we have once more proved to ourselves what great and credulous fools we are. But that's a bit lengthy for a pithy aphorism, so your quote above will stand in for publishing purposes.
The latter part about bravery is true enough. Lacking fear is just foolishness. A lifetime spent innawoods taught me that if you're not afraid, you're food.
Thanks!