[1] Block, along with many French economists of his time, believed that economics was too complex of a subject to be amenable to mathematical techniques.

[2] He retired in 1862 and thenceforth wrote predominantly on the topics of agriculture, finance and public administration, turning to criticism of socialism in the 1890s.

A prolific writer, he was published in a number of academic and professional magazines and journals of the time.

He is the author of the famous distinction between the three political lines : Orleanism, Legitimism and Bonapartism.

[5] As Adolphe Franck and Michel Breal, he is one of those Jewish Scholars who attempted to remain neutral during the Dreyfus affair.