Opinions differ most when there is least scientific warrant for having any.
Just as radical heirs apparent are said to lay aside all inconvenient revolutionary opinions when they come to the throne, it was believed that Mr. Mill in Parliament would be an entirely different person from Mr. Mill in his study.
All the great evils which men cause to each other because of certain intentions, desires, opinions, or religious principles, are likewise due to non-existence, because they originate in ignorance, which is absence of wisdom.
Our own heart, and not other men’s opinions form our true honor.
We cling to our own point of view, as though everything depended on it. Yet our opinions have no permanence; like autumn and winter, they gradually pass away.
It’s queer how ready people always are with advice in any real or imaginary emergency, and no matter how many times experience has shown them to be wrong, they continue to set forth their opinions, as if they had received them from the Almighty!
If there is one thing I fear less than everything else, it is, I believe, persecution for my opinions. There are a good many points about which I may be diffident, but when it comes to questions of Truth and intellectual independence, there is no holding me – I can envisage no finer end than to sacrifice oneself for a conviction.
I think we ought always to entertain our opinions with some measure of doubt. I shouldn’t wish people dogmatically to believe any philosophy, not even mine.
All political revolutions, not affected by foreign conquest, originate in moral revolutions. The subversion of established institutions is merely one consequence of the previous subversion of established opinions.
Opinions alter, manners change, creeds rise and fall, but the moral laws are written on the table of eternity.