We must lay hold of the fact that economic laws are not made by nature. They are made by human beings.

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.

The sway of alcohol over mankind is unquestionably due to its power to stimulate the mystical faculties of human nature, usually crushed to earth by the cold facts and dry criticisms of the sober hour.

Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous.

The function of prayer is not to influence God, but rather to change the nature of the one who prays.

All art is but imitation of nature.

Where is human nature so weak as in the bookstore?

A happy life is one which is in accordance with its own nature.

To understand the nature of the people one must be a prince, and to understand the nature of the prince, one must be of the people.

For greed all nature is too little.