The morality of an act is a function of the state of the system at the time it is performed.


Exploring new ethics for survival: the voyage of the spaceship Beagle (ed. Viking Adult, 1972)


The morality of an act is a function of the state of the system at the time it is performed.

The morality of an act is a function of the state of the system at the time it is performed.

The morality of an act is a function of the state of the system at the time it is performed.

The morality of an act is a function of the state of the system at the time it is performed.