He undertook his primary and secondary studies in Dieppe at the Jehan Ango school, beginning in 1910, and subsequently at the Lycée Louis-le-Grand in Paris.
Following his graduation from the School of Physics and Chemistry, Voisin worked as an engineer in the rubber industry, initially in a tyre factory.
[3] In October 1940, Voisin returned to occupied France to administer his family farm, "Le Talou", a 130-hectare (320-acre) estate in Gruchet, south of Arques-la-Bataille.
Lieutenant Voisin was assigned a regiment of marine infantry and was then involved in several campaigns with the Free French forces, notably the short-lived but intense Battle of the Vosges in October.
It was illustrated by the official Navy artist, Commander Luc-Marie Bayle Towards the end of 1945, having fulfilled his duty to his country, Voisin returned to Gruchet to pursue his true passion of farming.
From 1951, Voisin was invited to give lectures both at home and abroad, most notably in the United States in 1951, but also in Great Britain, Ireland and Germany.
[3] In 1954, Voisin recorded an effective stocking rate for the most productive part of the grazing season (10 May – 23 September) of 2.2 Livestock Units per acre (5.5 LU/ha).
[4] Eventually Voisin developed his "four laws" of rational grazing; he argued that these principles were applicable universally, "whatever the soil conditions, climate, altitude, latitude or longitude."
In June 1964, Fidel Castro extended an invitation to Voisin to deliver a series of lectures at the University of Havana in Cuba on the subject of Rational Grazing.
Voisin had previously expressed to his wife the desire that, should he die whilst abroad giving lectures, his remains should be buried in the country of his death.
[7] The Cuban government declared 1965 "The Year of Agriculture" in homage to Voisin, and a commemorative stamp was issued on the first anniversary of his death, having a face value of 3¢.
The loss of Soviet energy and chemical imports necessitated the transition to "an organic and skill-intensive agroecological model" based on the principles of Voisinism.
[10] Although Voisin's research is now considered one of the foundational works of the permaculture, holistic management and grass-fed beef movements, he remains relatively unknown in his home country.
According to a socialist compatriot Gérard Pestrinaux, he is a political paradox: "(Voisin) was not a man of the left, but a classic Gaullist right, and yet he is buried in the cemetery of the heroes of the Cuban Revolution!