Courage is an ethical reality, but it is rooted in the whole breadth of human existence and ultimately in the structure of being itself. It must be considered ontologically in order to be understood ethically."
-- Paul Tillich (Being and Courage)

Importance: This quote demonstrates Tillich's approach in examining courage and existence. It is also indicative of his larger methodological concerns which prioritize being and ontology as a type of first-order framing device.

The courage to be is the ethical act in which man affirms his own being in spite of those elements of his existence which conflict with his essential self-affirmation.
-- Paul Tillich (Being and Courage)

Importance: This quote contains Tillich's most succinct, concise, and emblematic definition of courage as a virtue. In all respects, he holds courage to be an act of individual self-affirmation in the face of potential annihilation.

Self-affirmation is the affirmation of life and of the death which belongs to life.
-- Paul Tillich (Being and Courage)

Importance: This quote adds more substance and texture...