To be absolutely certain about something, one must know everything or nothing about it.

To be absolutely certain about something, one must know everything or nothing about it.

Convictions are more dangerous foes of truth than lies.

Convictions are more dangerous foes of truth than lies.

If we insist on being as sure as is conceivable... we must be content to creep along the ground, and read more

If we insist on being as sure as is conceivable... we must be content to creep along the ground, and can never soar.

To be positive: to be mistaken at the top of one's voice.

To be positive: to be mistaken at the top of one's voice.

When one admits that nothing is certain one must, I think, also add that some things are more nearly certain read more

When one admits that nothing is certain one must, I think, also add that some things are more nearly certain than others

When I was young I was sure of everything; in a few years, having been mistaken a thousand times, I read more

When I was young I was sure of everything; in a few years, having been mistaken a thousand times, I was not half so sure of most things as I was before; at present, I am hardly sure of anything but what God has revealed to me.

In a universe of ambiguity, this kind of certainty comes only once, no matter how many lifetimes you live.

In a universe of ambiguity, this kind of certainty comes only once, no matter how many lifetimes you live.

If we begin with certainties, we shall end in doubts; but if we begin with doubts, and are patient in read more

If we begin with certainties, we shall end in doubts; but if we begin with doubts, and are patient in them, we shall end in certainties.

Certainty is the mother of quiet and repose, and uncertainty the cause of variance and contentions

Certainty is the mother of quiet and repose, and uncertainty the cause of variance and contentions