The shortest period of time lies between the minute you put some money away for a rainy day and the unexpected arrival of rain.
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 wh...
There is only one thing about which I am certain and this is that there is very little about which one can be certain.
If a man will begin with certainties he shall end in doubts but if he will content to begin with doubts he shall end in certainties.
Every time I think that I'm getting old and gradually going to the grave something else happens.
To Death I yield but not to Doubt who slays before!
In case of doubt decide in favor of what is correct.
The only thing that makes life possible is permanent intolerable uncertainty not knowing what comes next.
Every year if not every day we have to wager our salvation upon some prophecy based upon imperfect knowledge.
A reasonable probability is the only certainty.
Free man is by necessity insecure thinking man by necessity uncertain.
Faith ... acts promptly and boldly on the occasion on slender evidence.
Faith hasn't got no eyes but she's long-legged.
Doubt indulged soon becomes doubt realized.
We are not certain we are never certain.
Certitude is not the test of certainty. We have been cock-sure of many things that were not so.
We sail within a vast sphere ever drifting in uncertainty driven from end to end.
If we wait until we've satisfied all the uncertainties it may be too late.
I think I look good out there. I'm strong powerful and artistic. But I have my doubts as much as anyone.
Action will remove the doubts that theory cannot solve.
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