“The opinion of the strongest is always the best.”
La raison du plus fort est toujours la meilleure.
Book I (1668), fable 10 (The Wolf and the Lamb).
Fables (1668–1679)
Variant: The argument of the strongest is always the best.
Original
La raison du plus fort est toujours la meilleure.
Fables (1668–1679)
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Jean De La Fontaine 47
French poet, fabulist and writer. 1621–1695Related quotes

“In my opinion Danny was far and away the best.”
Nigel Lythgoe, judge for So You Think You Can Dance
Dreben, Jed (August 17, 2007) "Sabra Johnson Triumphs as Dance Champ" http://www.people.com/people/article/0,,20052283,00.html People.com. Retrieved August 17, 2007.
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"Civilization," London and Westminster Review (April 1836)
Context: We are not so absurd as to propose that the teacher should not set forth his own opinions as the true ones and exert his utmost powers to exhibit their truth in the strongest light. To abstain from this would be to nourish the worst intellectual habit of all, that of not finding, and not looking for, certainty in any teacher. But the teacher himself should not be held to any creed; nor should the question be whether his own opinions are the true ones, but whether he is well instructed in those of other people, and, in enforcing his own, states the arguments for all conflicting opinions fairly.

“That’s always been my opinion but my opinion is only one of many.”
Remarks http://www.dailyrecord.co.uk/news/politics/alex-salmond-insists-wrath-khan-4301649 during a television interview (21 September 2014).
Context: When you have the majority of a country up to the age of 55 already voting for independence, then I think the writing's on the wall for Westminster. I think Scots of my generation and above should be looking at themselves in the mirror and wonder if we by majority, as a result of our decision, have actually impeded progress for the next generation, something no generation should do. The destination is pretty certain – we're only now debating the timescale and the method. I'll contribute to that debate, but I think it's time for new leadership. There are a number of political opportunities coming up. For many, many years, a referendum route wasn't the chosen route of the SNP or Scotland. For many years, there was a gradual attitude to independence. You establish a parliament and establish successively more powers until you have a situation where you're independent in all but name, and then presumably declare yourself to be independent. Many countries have proceeded through that route – there is a parliamentary route where people can make their voice heard as well – so a referendum is only one of a number of routes. I think that’s the best route. That’s always been my opinion but my opinion is only one of many.

“Public opinion's always in advance of the law.”
Windows, Act I (1922)

The Philosophy of Antoninus
Context: The doctrines of Epictetus and Antoninus are the same, and Epictetus is the best authority for the explanation of the philosophical language of Antoninus and the exposition of his opinions.

“Will a job be the best solution to this fear over the long run?’ In my opinion, the answer is ‘no.”
Rich Dad Poor Dad: What the Rich Teach Their Kids About Money-That the Poor and the Middle Class Do Not!

From interview with Anshul Chaturvedi

“There is always the risk in parliament that political opinions might be expressed.”
As quoted in "Putin's shadow falls over Finland" by Simon Tisdall, in The Guardian (14 June 2006) http://www.guardian.co.uk/commentisfree/2006/jun/15/world.comment