Famous quotes containing the words dangerous and/or materials:
“They ought to be gentle to their friends and dangerous to their enemies.”
—Plato (c. 427–347 B.C.)
“If only it were God’s will that printed and written materials have as much influence on the people as the princes and their censors fear! Considering the countless good books we have, the world would have changed for the better a long time ago.”
—Franz Grillparzer (1791–1872)