If then humanity is indefinitely variable, perfectibility is possible.
But still he could not share his friends' belief in the perfectibility of mankind.
Vice and misery and the inexorable laws of population were a godsend to rescue the state from "the precipice of perfectibility."
Man cannot, then, surpass himself: man's perfectibility is not infinite.
Godwin believed in the perfectibility of the race, and proved that man's career has been a constant movement forward.
It is well to ponder, by the roar of the cataracts of the Nile, over the perfectibility of man.
He laughs at the perfectibility of the species, and holds that 'all things move, not in progress but in a ceaseless round.'
I am very glad to hear that you have been arguing against Nageli's law of perfectibility, which seems to me superfluous.
Such are the memorable quarrel of the Ancients and the Moderns, and the philosophe idea of perfectibility and human progress.
This theory of perfectibility exercises prodigious influence even on those who have never thought of it.