Inquiry is fatal to certainty.
Sentiment: NEGATIVE
Doubt is not a pleasant condition, but certainty is absurd.
Certitude is not the test of certainty. We have been cocksure of many things that were not so.
That though we are certain of many things, yet that Certainty is no absolute Infallibility, there still remains the possibility of our being mistaken in all matters of humane Belief and Inquiry.
Doubt grows with knowledge.
Wonder rather than doubt is the root of all knowledge.
I am certain there is too much certainty in the world.
Doubt is a killer. You just have to know who you are and what you stand for.
To believe with certainty we must begin with doubting.
Uncertainty is a very good thing: it's the beginning of an investigation, and the investigation should never end.
I shall endeavour still further to prosecute this inquiry, an inquiry I trust not merely speculative, but of sufficient moment to inspire the pleasing hope of its becoming essentially beneficial to mankind.