Abstractions.

Language is not neutral. It is not merely a vehicle which carries ideas.
It is itself a shaper of ideas.
DALE SPENDER

The most erroneous stories are those we think we know best--and
therefore never scrutinize or question.
STEPHEN JAY GOULD

The appropriately beautiful or ugly sound of any word is an illusion
wrought on us by what the word connotes.
MAX BEERBOHM

Words form the thread on which we string our experience.
ALDOUS HUXLEY

Words are loaded pistols.
JEAN-PAUL SARTRE

To have doubted one's own first principles is the mark of a civilized
man.
OLIVER WENDELL HOLMES, SR.

No two persons ever read the same book.
EDMUND WILSON