Peace can be promoted by the limitation of arms and by the creation of the instrumentality for peaceful settlement of controversies. But it will become a reality only through self-restraint and active effort in friendliness and helpfulness.

It is a fair summary of history to say that the safeguards of liberty have been forged in controversies involving not very nice people.

I really thank my parents for giving me the good sense to not get into anything wrong. There are many people around who like controversies, and I actually wonder how do they do it. I don't have the courage to get into controversies. There are people who love it; I find it silly.

For wordsmiths and masters of words, without necessarily being harsh with words, the words have a tendency to shoot straight to the hearts of people, and this either deeply touches them or deeply angers them. Like the apostles in all their loving controversies are those who are masters of words while combining this gift with truth.

A number of scientists with greatly different backgrounds can come up with completely different assessments. The discussions or controversies are endless. Once a year we try to bring the most important discoverers together to exchange their experiences and knowledge.

The passionate controversies of one era are viewed as sterile preoccupations by another for knowledge alters what we seek as well as what we find.

The most savage controversies are about matters as to which there is no good evidence either way.

Wikipedia is just an incredible thing. It is fact-encirclingly huge and it is idiosyncratic careful messy funny shocking and full of simmering controversies - and it is free and it is fast.