08/35'. Speculative learning with regard to possessing knowledge is what a wooden leg is to a healthy limb.

09/10 . All knowledge not experienced is null and void, since it has no effect.

09/04'. The eyes of the spirit perceive easily the obviousness of eternity and the hands of knowledge manifest it effortlessly.

09/59'. There is only one knowledge , one union and one repose that are true, which are in the accomplished fixity of heavenly fire.

12/37'. It is abandon, grace and love that deliver us from the prisons of death and that give us access to the abodes of heaven; but it is possessive knowledge that fixes us in the secret centre.

11/58. True knowledge implies possession, absorption and transmutation.

11/69. Few men have been favoured with possessive knowledge here below, since few saints among the best are capable of acquiring divine power without adversely affecting themselves and others. To be possessed by God is to be holy. To possess God is to be wise. But to penetrate God is to be senseless and become like God, who is the primary and ultimate sense.