In the different places

Prądnicka 35-37, Gabriel Narutowicz Hospital

Salus aegroti suprema lex

The safety of patients the supreme law

The maxim is a transformation of the fundamental Roman rule 'Salus rei publicae suprema lex' (The safety of the republic the supreme law).

Aleja Pokoju 67, M-1 Supermarket
...et lux in tenebris lucet, et tenebrae eam non comprehenderunt.
The light shines in the darkness and the darkness did not comprehend it. 

In the main hall of the supermarket M-1 there is an image, replica 'Pochodnie Nerona' (Nero torches) by Henryk Siemiradzki. The original picture is in the Sukiennice National Gallery on the Main Square. The above sentence is on the picture frame up and down. A quotation is from the Gospel of Saint John (1,5). 

ł