Jefferson's ideas and philosophy, his faith in small farmers, in democracy, and in education were his keystone to government; his concern for the farmers incurred attack of the wealthy; feared big cities and overpopulation; fought monopolies; believed human institutions adjust to changing world; modern farm production machinery would surprise him, but economic, sociological, political consequences would disturb him. His extraordinary adaptability would help to understand modern corporations; always for that form of government serving greatest number of people, States' rights or Federal power.