Justice insists on obligation, law on decorum. Justice is critical and discriminating; law is supervisory and commanding. Justice refers to the individual, law to the community.

[Das Recht dringt auf Schuldigkeit, die Polizei aufs Geziemende. Das Recht ist abwägend und entscheidend, die Polizei überschauend und gebietend. Das Recht bezieht sich auf den Einzelnen, die Polizei auf die Gesamtheit.]

Johann Wolfgang von Goethe (1749-1832) German poet, statesman, scientist

Sprüche in Prosa: Maximen und Reflexionen [Proverbs in Prose: Maxims and Reflections] (1833) [tr. Rönnfeldt (1900)]
    (Source)

From Wilhelm Meister's Journeyman Years (1829).

(Source (German)). Alternate translations:

Justice insists on obligation, law on decorum. Justice weighs and decides, law superintends and orders. Justice refers to the individual, law to society.
[tr. Saunders (1893), "Life and Character," sec. 1, # 50]

Law deals with guilt, the police with what is fitting. Law considers and decides, the police surveys and commands. Law is concerned with the individual, the police with the community.
[tr. Stopp (1995), #544]