quantum physics, 151 *
quantum theory, 70 , 540 , 606 , 669 , 832 -833
race, 682 -683
Radcliffe, Ann Ward, English romantic novelist ( 1764-1823), 679
radio-activity, 47
rainbow, 464 , 465 , 570
Ranke, Leopold von, German historian ( 17951886), 497
rationalism, 547 , 549 , 673 , 719 , 724 , 731 , 782 , 790 ; in Greek world,
15 , 21 , 22 , 28 , 32 , 37 , 40 , 61 , 63 , 64 , 224 ; and science, 42 , 703
Ravenna, 374 , 382 , 383 , 389 , 390
Raymond, archbishop of Toledo (fl. ca. 1240), 440
Raymond VI, Count of Toulouse ( 1156 -1222), 442
real and good, the, 136
realism, 162 , 404 , 438 , 467 , 484 , 791 , 797
reality, 67 , 136 , 708 , 808 , 810 , 816 , 821 ; and Hegel, 731 -732, 734 ,
743 , 824 ; and Plato, 105 , 106 , 119 120, 125 , 126 , 134 , 166 ; and
Platonic theory of ideas, 122 , 128 , 129
reason, 15 , 37 , 46 , 267 , 289 , 317 , 549 , 691 *, 787 ; and Aquinas, 454 ,
460 , 462 ; and Aristotle, 171 , 172 , 173 , 181 ; and Averroes, 426 , 453 ;
and Bentham, 776 ; and Bergson, 791 , 794 , 800 ; and Catholic philosophy,
303 -304, 328 , 400 , 403 , 416 , 418 , 435 , 438 , 440 , 542 ; and Hegel,
734 , 736 , 740 , 804 ; and Kant, 705 , 709 , 710 ; and Locke, 607 , 612 ,
625 ; and Plato, 124 , 134 , 143 ; and
revolt, 725 , 791 ; and Rousseau, 693 , 703 ; sufficient, law of, 591
recurrence, 255
reflection, 13 , 286
Reflections on Violence ( Sorel), 791
reform, 512 , 645 , 753 ; ecclesiastical, 389 , 407 -419, 431 , 443
Reformation, 304 , 393 , 400 , 510 , 522 -525; and St. Augustine, 335 , 346
, 363 ; economic changes in, 187 -188; and Erasmus, 515 , 517 ;
foreshadowed, 434 , 447 , 449 , 469 , 486 ; and Germany, 720 , 738 ; and
politics, 555 , 619 ; as reaction to corruption in Church, 499 , 511 ; and
Renaissance, 493 , 499 , 512 , 828 ; and State, 335 , 363 , 739
refugees, 13 , 25 , 53 , 305 , 375 , 402 , 547
refutations, 52 , 203
Regent's Canal, 681