Quotes about doubt

Scepticism is not irrefutable, but obviously nonsensical, when it tries to raise doubts where no questions can be asked.

For doubt can exist only where a question exists, a question only where an answer exists, and an answer only where something can be said.

We've looked and looked, but after all where are we?

Do we know any better where we are,

And how it stands between the night tonight

And a man with a smoky lantern chimney?

How different from the way it ever stood?

Truths turn into dogmas the instant that they are disputed. Thus every man who utters a doubt defines a religion. And the scepticism of our time does not really destroy the beliefs, rather it creates them; gives them their limits and their plain and defiant shape. We who are Liberals once held Liberalism lightly as a truism. Now it has been disputed, and we hold it fiercely as a faith. We who believe in patriotism once thought patriotism to be reasonable, and thought little more about it. Now we know it to be unreasonable, and know it to be right. We who are Christians never knew the great philosophic common sense which inheres in that mystery until the anti-Christian writers pointed it out to us. The great march of mental destruction will go on. Everything will be denied. Everything will become a creed. It is a reasonable position to deny the stones in the street; it will be a religious dogma to assert them. It is a rational thesis that we are all in a dream; it will be a mystical sanity to say that we are all awake. Fires will be kindled to testify that two and two make four. Swords will be drawn to prove that leaves are green in summer. We shall be left defending, not only the incredible virtues and sanities of human life, but something more incredible still, this huge impossible universe which stares us in the face. We shall fight for visible prodigies as if they were invisible. We shall look on the impossible grass and the skies with a strange courage. We shall be of those who have seen and yet have believed.

It was a horrible feeling to find things in your head and not know how they fitted.

Now the plan was threatend by something more serious than the Mule had ever been. It was to be diverted from a renewal of Empire to something utterly different from anything in history - Galaxia. And he himself had agreed to that. But why? Was there a flaw in the plan? a basic flaw? For one flashing moment, it seemed to Trevize that this flaw did indeed exist and that he knew what it was, that he had known what it was when he made his decision - but the knowledge...if that were what it was...vanished as fast as it came, and left him with nothing.

Moral certainty is always a sign of cultural inferiority. The more uncivilized the man, the surer he is that he knows precisely what is right and what is wrong. All human progress, even in morals, has been the work of men who have doubted the current moral values, not of men who have whooped them up and tried to enforce them. The truly civilized man is always skeptical and tolerant, in this field as in all others. His culture is based on "I am not too sure."

We are here and it is now: further than that, all human knowledge is moonshine.

The two ways of contemplation are not unlike the two ways of action commonly spoken of by the ancients: the one plain and smooth in the beginning, and in the end impassable; the other rough and troublesome in the entrance, but after a while fair and even. So it is in contemplation: If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts he shall end in certainties.

How can I tell," said the man, "that the past isn't a fiction designed to account for the discrepancy between my immediate physical sensations and my state of mind?