Ad Petri Cathedram
   Chapter, §
 1   2,23     |                                 23. God created men as brothers,
 2   2,44(15) |                             AAS 23 (1931) 393-94.~
 3   3,89(39) |         John 17.11, 17, 20, 21, 23. ~
 4   4,125(62)|                          Luke 9.23.~
 5   4,128(64)|   letter Ouadragesimo anno: AAS 23 (1931) 196-98.~


Aeterna Dei sapientia
   §
 6 23         |                                 23. The sad history of the
 7 74(66)     |                 John 17:11, 20, 23.~


Mater et magistra
   §
 8 21(8)      |                         Cf. AAS 23 (1931) 185. ~
 9 23         |                                 23. Finally, both workers and
10 45(24)     |                             AAS 23 (1931) 203. ~
11 76(28)     |                             AAS 23 (1931) 195.~
12 116(35)    |   letter Quadragesimo anno; AAS 23 (1931) 214.~
13 139(39)    |                         Cf. AAS 23 (1931) 202.~
14 242(48)    |                             AAS 23 (1931) 221 et seq.~


Pacem in terris
   §
15 23         |                                 23. Men are by nature social,
16 23(20)     |   letter Quadregesimo anno, AAS 23 (1931) 199-200; and Pius
17 51(35)     | Christmas 1945, AAS 37 (1945) 5-23. ~
18 52(36)     | Christmas 1944, AAS 37 (1945) 5-23. ~
19 59(44)     |   letter Quadragesimo anno, AAS 23 (1931) 215.~


Paenitentiam agere
   §
20 23         |                                 23. Clearly the most efficacious
21 36(36)     |                          Luke 9.23.~


Princeps pastorum
   §
22 23         |                                 23. If it is true, as We said,


Sacerdotii nostri primordia
   Chapter, §
23   1,23     |                                 23. Venerable Brethren, do