The problems that exist in this world can not be solved by the level of thinking that created them.

The led must not be compelled; they must be able to choose their own leader.

I am convinced that some political and social activities and practices of the Catholic organizations are detrimental and even dangerous for the community as a whole, here and everywhere. I mention here only the fight against birth control at a time when overpopulation in various countries has become a serious threat to the health of people and a grave obstacle to any attempt to organize peace on this planet.

It is important to foster individuality, for only the individual can produce the new ideas.

It is a precarious undertaking to say anything reliable about aims and intentions.

He who has never been deceived by a lie does not know the meaning of bliss.

No scientist thinks in formulae.