In the name of freedom, there has to be a correlation between rights and duties, by which every person is called to assume responsibility for his choices, made as a consequence of entering into relations with others. Here our thoughts turn also to the way the results of scientific research and technological advances have sometimes been applied. Notwithstanding the enormous benefits that humanity can gain, some instances of this represent a clear violation of the order of creation, to the point where not only is the sacred character of life contradicted, but the human person and the family are robbed of their natural identity. Likewise, international action to preserve the environment and to protect various forms of life on earth must not only guarantee a rational use of technology and science, but must also rediscover the authentic image of creation. This never requires a choice to be made between science and ethics: rather it is a question of adopting a scientific method that is truly respectful of ethical imperatives.

Address to the United Nations, 2008