La vie

"Seul le respect de la vie peut fonder et garantir les biens les plus precieux et les plus necessaires de la societe, comme la democratie et la paix"

Ioannes Paulus PP.II 1995. Evangelium Vitae (101)

Measurement

"An end cannot be achieved without the means, but the end measures and integrates the means in a whole system. Since the means are relative to the end, however, the means (...) can be limited or restricted so that they truly serve the end rather than overpower it".

Ashley, B.M. & O'Rourke, K.D. 1989. Healthcare ethics (third edition). St.Louis MO: The Catholic Health Association of the United States, 36

Epicurus (341 - 271 B.C)

"We must consider both the real purpose and all the evidence of direct perception, to which we always refer the conclusions of opinion; otherwise, all will be full of doubt and confusion"

Principal Doctrines, XXII