Lower still: I doubt if it is so.
Lower: It is improbable.
Lower: It is not.
Lower: It is not possible.
Ascending: This is proven, I have the proof in my hand.
Higher: This is superlatively beautiful.
Higher: It is enchantingly beautiful.
The degree of certainty in the affirmation varies with, the angle which the fore-arm forms with the arm.
All these modes of affirmation may be applied to negation. For example:
"It is impossible that this should not be. This cannot be."