Compassion is a result of knowledge. But what about Courage? We are all suffering. This knowledge results in compassion. Buddha was compassionate. And courageous too. 

My question is : Is there any aspect of knowledge which results in courage?
Which types of knowledge results in courage?

Emptiness. Realizing Emptiness leads to courage, because when you have nothing you have nothing to lose. Abidelessness is the ultimate courage. Abidelessness is having no conceptual home, no warm stinking lair of the ego to defend, no territory to call your own. You are a "wanderer" in the ultimate sense of the word.

Understanding Emptiness conceptually is not enough though. This aspect of vidya is active spontaneousness, sincere unforced action without calculations. Of course before you can be like that you have to remove all guilt first, hence the practice of sila, morality. As Buddha said in suttas, dirty mind has many fears, pure mind has none.

Then you have to "leap off the cliff", metaphorically speaking. This means, expose yourself, with all your imperfections. Become open and vulnerable in the world. You jump right into fear, the fear does not stop, but you ignore it, defy it, and keep going. You setup the intent to keep going, no matter what your doubts tell you. You make your own mood, instead of your mood making you.

You no longer rely on the expectations of the world to set your direction. You don't even rely on your Buddhism teacher and Dharma anymore. You have to figure out your path by yourself, which is like the baby learning to walk for the first time.

I refer you to the following articles:  


Facing Yourself by Chögyam Trungpa Rinpoche and Pema Chödrön
Bravery: Taking a Leap by Sakyong Mipham


As well as this book by my beloved teacher Chögyam Trungpa: "Smile at Fear. Awakening the True Heart of Bravery”