1 - ( ) The instinct of self-preservation is a law of nature. The Spirits' Book; 702

         2 - ( ) God has given the instinct of self-preservation to all living beings to the working out of the providential plans. The Spirits' Book; 703

         3 - ( ) Life is not a necessary condition of the improvement of beings. The Spirits' Book; 703

         4 - ( ) God always furnished man with the means of living. The Spirits' Book; 705

         5 - ( ) Earth always produce the necessaries of life, if men could content themselves therewith. The Spirits' Book; 707

         6 - ( ) The privation of the barest necessaries of life is a trial he would have to undergo. The Spirits' Book; 708

         7 - ( ) In worlds in which the corporeal organisation of living beings is of a purer nature than in the earth, these don’t need food. The Spirits' Book; 710

         8 - ( ) Material things excite man to live and to accomplish his mission. The Spirits' Book; 712

         9 - ( ) It is a test for man to enjoy material things without excesses. This is a test for the incarnate spirits. The Spirits' Book; 712 and 712-a

         10 - ( ) Illnesses, difficulties and premature death are a result of the abuses in regards to the use of material belongings. The Spirits' Book; 712, commentary.

         11 - ( ) It’s not possible to know the limit of what is necessary. The Spirits' Book; 715.

         12 - ( ) There is no absolute boundary-line between the necessary and the superfluous. The Spirits' Book; 717.

         13 - ( ) It is blameable in a man to seek after the comforts and enjoyments of corporeal life. The Spirits' Book; 719

         14 - ( ) The enjoyment should not be acquired at another's expense. The Spirits' Book; 719

         15 - ( ) The human being should avoid the excess of corporeal well-being, valuing the virtues taught by Jesus. The Spirits' Book; 719

         16 - ( ) Voluntary privations, in view of a voluntary expiation, are meritorious in the sight of God. The Spirits' Book; 720

         17 - ( ) Whatever man can eat without injury to his health is permitted to him. The Spirits' Book; 722

         18 - ( ) God cannot regard as meritorious any abstinence that does not impose a real privation, and that has not a serious and useful aim. The Spirits' Book; 724

         19 - ( ) When your voluntary sufferings are undergone only for yourselves, they are mere selfishness; when you suffer for others, you obey the law of charity. Such are the precepts of Christ. The Spirits' Book; 726

         20 - ( ) The instinct of self-preservation has not been given to all beings to guard them against dangers and sufferings. The Spirits' Book; 727