All abstract sciences are nothing but the study of relations between signs. – Denis Diderot
There is no moral precept that does not have something inconvenient about it. – Denis Diderot

All abstract sciences are nothing but the study of relations between signs. – Denis Diderot
There is no moral precept that does not have something inconvenient about it. – Denis Diderot
The possibility of divorce renders both marriage partners stricter in their observance of the duties they owe to each other. Divorces help to improve morals and to increase the population. – Denis Diderot
There are three principal means of acquiring knowledge… observation of nature, reflection, and experimentation. Observation collects facts reflection combines them experimentation verifies the result of that combination. – Denis Diderot