Petr Alekseevich Kropotkin: “The whole school was disgusted at this Jesuitic speech.”

It is time to conclude, and, for every unprejudiced mind, the conclusion is self-evident.

Any soil, of any desired composition, can be made by machinery.

It is a fact that chemical manures, without organic manure, seldom prove to be sufficient.

Few books have exercised so pernicious an influence upon the general development of economic thought as Malthus’s Essay on the Principle of Population exercised for three consecutive generations.