Conventional dogmas, even if endowed with the authority of an Aristotle - ancient or modern - must be tested vigorously. If they are found wanting, we need not bother with them. But if they are found to be substantially correct, we may not overlook them.
Great literature must spring from an upheaval in the author's soul. If that upheaval is not present then it must come from the works of any other author which happens to be handy and easily adapted.
There comes a time in the affairs of man when he must take the bull by the tail and face the situation.
We must take the time to do what needs to be done now, what is right, instead of passing a bad bill.
I believe that if we really want human brotherhood to spread and increase until it makes life safe and sane, we must also be certain that there is no one true faith or path by which it may spread.
Faith is an aptitude of the spirit. It is, in fact, a talent: you must be born with it.
One must not cheat anyone, not even the world of its victory.
Most of the big banks were shot through with short-termism, deceptive practices and self-dealing. We must institute basic changes in corporate governance and in management practice to restore responsibility and honesty for the sake of the economy and for the self-respect of the country.
Therefore, the good of man must be the end of the science of politics.
A healthy and fully functioning society must allocate its resources among a variety of competing interests, all of which are more or less valid but none of which should take precedence over national security.
To succeed in the world it is not enough to be stupid, you must also be well-mannered.
We must say something, even when we know nothing.
We must walk consciously only part way toward our goal, and then leap in the dark to our success.
I rarely get recognised. It's always a shock when someone notices me. I always think they must be confusing me with someone else.
To understand why dictators have a problem with making peace - or at least a genuine peace - the link between the nature of a regime and its external behavior must be understood.
It is the lash of hunger which compels the poor man to submit. In order to live he must sell - 'voluntarily' sell - himself every day and hour to the 'beast of property.'
There is no 'slippery slope' toward loss of liberties, only a long staircase where each step downward must first be tolerated by the American people and their leaders.
The advance guard in the campaign for peace that America wages today must be the State Department.
Europe and America must act together in the face of evil. It's high time for Americans and Europeans to restore that unity and be able to take actions collectively together.
Building a proper wardrobe is like building a home. Indeed, you should think of it like a home, because it is something you're going to live in. It must be comfortable and suit all your needs.
Politeness decrees that you must listen to be kind; intelligence decrees that you must listen to learn.
I can't imagine what it must be like to be one of the indigenous people of the United States of America. I can't imagine watching the news every day - as people debate whose country this is and who should be in charge of it and how to make it great again - and hardly ever see your people brought into the discussion.
I've got three sisters, five aunties, and my mom. It must have had an influence on me growing up.
A promise must never be broken.
The United States isn't a dictatorship ruling with a brutal army and an iron fist, so our police departments must understand that they are there to serve and protect us - all of us. And when they do commit crimes, they must be arrested and prosecuted like anyone else, bottom line.
The novelist must ground his work in faithful study of human nature.
I must create a system or be enslaved by another mans; I will not reason and compare: my business is to create.
Somewhere in my wildest childhood I must have done something right. Being able to make a boyhood dream come true is one thing, but to have a kid come along and thrill his dad like Brett Hull has thrilled me over his career is too much for one guy to handle.
As a result of the digital age and the decline of first-class mail, there is no question that the Postal Service must change and develop a new business model.
As to that leisure evening of life, I must say that I do not want it. I can conceive of no contentment of which toil is not to be the immediate parent.
As I have tried to show, science, in producing the airplane and the wireless, has created a new international political environment to which governments must adjust their foreign policies.
Creativity is not merely the innocent spontaneity of our youth and childhood; it must also be married to the passion of the adult human being, which is a passion to live beyond one's death.
So we must stand together to resist, for we will get what we can take - just that and no more.
Since new developments are the products of a creative mind, we must therefore stimulate and encourage that type of mind in every way possible.
I know that every good and excellent thing in the world stands moment by moment on the razor-edge of danger and must be fought for.
What's funny is my husband doesn't have any tattoos at all, so he must be the very conservative one.
