The manner in which things exist and take place, constitutes what is called the nature of things; and a careful observation of the nature of things is the sole foundation of all truth.


Introduction, p. xvii - A Treatise On Political Economy (Fourth Edition) (1832)

Jean-Baptiste Say Quotes

The manner in which things exist and take place, constitutes what is called the nature of things; and a careful observation of the nature of things...

The manner in which things exist and take place, constitutes what is called the nature of things; and a careful observation of the nature of things...

The manner in which things exist and take place, constitutes what is called the nature of things; and a careful observation of the nature of things...

The manner in which things exist and take place, constitutes what is called the nature of things; and a careful observation of the nature of things...