It is not human nature we should accuse but the despicable conventions that pervert it.

No man has received from nature the right to command his fellow human beings.

“One can only describe the human but can never define it because humans are complex in their nature.”

One can only describe the human but can never define it because humans are complex in their nature.

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.

Criminality is a basic part of human nature.