The struggle between Liberty and Authority is the most conspicuous feature in the portions of history with which we are earliest familiar; particularly in that of Greece, Rome, and England

Most persons have but a very moderate capacity of happiness. Expecting...in marriage a far greater degree of happiness than they commonly find, and knowing not that the fault is in their own scanty capability of happiness.

The demand for commodities is not the demand for labor.

It is questionable if all the mechanical inventions yet made have lightened the day's toil of any human being.

The application of algebra to geometry ... has immortalized the name of Descartes, and constitutes the greatest single step ever made in the progress of the exact sciences.

Solitude in the presence of natural beauty and grandeur is the cradle of thought and aspirations which are not only good for the individual, but which society can ill do without.

The individual is not accountable to society for his actions in so far as these concern the interests of no person but himself.