His fundamental ideas on money were published in Buenos Aires in the same year under the title Nervus rerum, and many books and pamphlets followed until he retired to Switzerland in 1906 as a man of some means, able to devote the last decades of his life to the two most delightful occupations open to those who do not have to earn their living, authorship and experimental farming.

The first section of his standard work was published in 1906 at Les Hauts Geneveys, Switzerland, under the title 'Die Verwirklichung des Rechtes auf den vollen Arbeitsertrag', and the second section in 1911 at Berlin under the title 'Die neue Lehre vom Zins'.