I am certain there is too much certainty in the world.
Sentiment: NEGATIVE
I'm sorry, I'm absolutely convinced that there is at the moment no realistic prospect for very much hope in human affairs.
Doubt is not a pleasant condition, but certainty is absurd.
In these matters the only certainty is that nothing is certain.
There is no such uncertainty as a sure thing.
It would be wonderful to think that the future is unknown and sort of surprising.
It is far better to foresee even without certainty than not to foresee at all.
The unknown is very scary.
There is no certainty; there is only adventure.
There is nothing so uncertain as a sure thing.
The only certainty is that nothing is certain.