True Budo calls for protecting the peace of the world.

O Sensei was a reader not a writer. So there are not that many sources that are actually written by him. Most of his teachings have been transmitted orally through the lessons of his students or others that have known him close. Or were lectures given by O Sensei that were written down by his students or others as his scribes.

This may sound strange to some, but many great thinkers did not leave anything or very little in writing behind; Socrates, Heraclitus, Jezus, Buddha and many others, yet their thoughts have had a profound influence on humanity.

So this may or may not be a direct quote of the founder. More important is the question whether or not statements like these reflect the ideas of the founder. The first statement seems obvious, nobody practices Budo in the hope one day to kill a person. Budo is often translated with "the way to stop fighting" . 
The second reflects his criticism on the military before and during the war and militarism more in general. 
The third sentence reminds of his prayers for world peace. 
Nature and nature preservation was a very big issue for the founder. He helped to preserve several areas as nature reservations.

Tom Verhoeven
Auvergne, Lente 2015