Impossibility

"It is not a lucky word, this same impossible; no good comes of those that have it so often in their mouth."

"The task was impossible, and mortal human beings accomplished nothing but their own destruction when they attempted the impossible."

"Hope not for impossibilities."

"It is easy to kill someone with a slash of a sword. It is hard to be impossible for others to cut down."

"Achieving impossibilities is the method of Economy of Evolution; ...all directed to a discovery of the Creativeness of the Universe!"

"You cannot make a crab walk straight."

"And what's impossible, can't be, And never, never comes to pass."

"Few things are impossible to diligence and skill."

"Simul flare sorbereque haud facile Est: ego hic esse et illic simul, haud potui."

"Certainly nothing is unnatural that is not physically impossible."

"Certum est quia impossibile est."

"You cannot make, my Lord, I fear, a velvet purse of a sow's ear."