Courage is of two kinds: courage in the face of personal danger, and courage to accept responsibility, either before the tribunal of some outside power or before the court of one’s own conscience.

[Der Muth ist doppelter Art: einmal Muth gegen die persönliche Gefahr, und dann Muth gegen die Verantwortlichkeit, sei es vor drm Richterstuhl irgend einer äussern Macht, oder der innern, nämlich des Gewissens.]

Karl von Clausewitz (1780-1831) Prussian soldier, historian, military theorist

On War [Vom Kriege], Book 1, ch. 3 “On Military Genius [Der Kriegerische Genius],” (1.3) (1832) [tr. Howard & Paret (1976)]
    (Source)

(Source (German)). Alternate translations:

Courage is of two kinds: first, physical courage, or courage in the presence of danger to the person; and next, moral courage, or courage before responsibility, whether it be before the judgment seat of external authority, or of the inner power, the conscience.
[tr. Graham (1873)]

Courage is of two kinds: first, courage in presence of danger to the person, and next, courage in the presence of responsibility, whether before the judgment seat of an external authority, or before that of the internal authority which is conscience.
[tr. Jolles (1943)]