Crossword-Solution: UNMODIFIABLE 12 letters, 16 clues 🏆 scrabble score: 20

Under these average boyish physiognomies that she seems to turn off by the gross, she conceals some of her most rigid, inflexible purposes, some of her most unmodifiable characters; and the dark-eyed, demonstrative, rebellious girl may after all turn out to be a passive being compared with this pink-and-white bit of masculinity with the indeterminate features.

When a desire is repressed, it is still desire, unsatisfied, insistent, unmodifiable by mature points of view, untouched by time, automatic, and capable of almost any subterfuge in order to get satisfaction.

Thus industry and conscientiousness and public spirit, which are clearly affected by environment, show no greater resemblance than such practically unmodifiable traits as memory, original sensitiveness to colors, sounds, and distances.

Maturity, in so far as it is mere growth independent of training, is also largely a fixed and unmodifiable condition.

True to the principle which I have stated, ancient Philosophy proclaimed that the only knowledge in the end worth having was knowledge of Fact--of what lay behind all seeming however fair--Fact unmodified and unmodifiable by human wish or will; it bade us know the world in which we live and move and have our being, know it as it is truly and in itself, and knowing it love it, loyally acquiescing in its purposes and subserving its ends.