Have a definite opinion.
So long as the laws remain such as they are today, employ some discretion: loud opinion forces us to do so; but in privacy and silence let us compensate ourselves for that cruel chastity we are obliged to display in public.
If you are kept in ignorance of the true way and permit yourself to rely upon and be guided by the opinion of imperfect man, you can never gain the riches that will bring you peace and lasting happiness.
Freedom of opinion can only exist when the government thinks itself secure.
In America everybody is of the opinion that he has no social superiors, since all men are equal, but he does not admit that he has no social inferiors, for, from the time of Jefferson onward, the doctrine that all men are equal applies only upwards, not downwards.
A process which led from the amoeba to man appeared to the philosophers to be obviously a progress though whether the amoeba would agree with this opinion is not known.
Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.
One should respect public opinion insofar as is necessary to avoid starvation and keep out of prison, but anything that goes beyond this is voluntary submission to an unnecessary tyranny.
The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd.
The first test of a truly great man is his humility. By humility I don't mean doubt of his powers or hesitation in speaking his opinion, but merely an understanding of the relationship of what he can say and what he can do.
The reversal of a Supreme Court opinion is possible.
There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.
It takes a very deep-rooted opinion to survive unexpressed.
In my opinion we are at the limit now, and 17 races is really too much. With all the testing that we do now, it means we're always on the bike and it's quite difficult.
I am not a pessimist; to perceive evil where it exists is, in my opinion, a form of optimism.