[Footnote 406: The metaphysical problem about the reality of time in relation to evolution is so closely bound up with speculative Mysticism, that I have been obliged to state my own opinion upon it. It is, of course, one of the vexed questions of philosophy at the present time; and I could not afford the space, even if I had the requisite knowledge and ability, to argue it. The best discussion of it that I know is in M'Taggart's _Studies in Hegelian Dialectic_, pp. 159-202. Cf. note on p. 23.] APPENDICES APPENDIX A Definitions Of "Mysticism" And "Mystical Theology" The following definitions are given only as specimens. The list might be made much longer by quoting from other Roman Catholic theologians, but their definitions for the most part agree closely enough with those which I have transcribed from Corderius, John a Jesu Maria, and Gerson. 1. _Corderius_. "Theologia mystica est sapientia experimentalis, Dei affectiva, divinitus infusa, quæ mentem ab omni inordinatione puram per actus supernaturales fidei spei et caritatis cum Deo intime coniungit.... Mystica theologia, si vim nominis attendas, designat quandam sacram et arcanam de Deo divinisque rebus notitiam." 2. _John a Jesu Maria_. "[Theologia mystica] est cælestis quædam Dei notitia per unionem voluntatis Deo inhærentis elicita vel lumine cælitus immisso producta." 3. _Bonaventura_ (adopted also by Gerson). "Est animi extensio in Deum per amoris desiderium." 4. _Gerson_. "Theologia mystica est motio anagogica in Deum per amorem fervidum et purum. Aliter sic: Theologia mystica est experimentalis cognitio habita de Deo per amoris unitivi complexum. Aliter sic: est sapientia, id est sapida notio habita de Deo, dum ei supremus apex affectivæ potentiæ rationalis per amorem iungitur et unitur." 5. _Scaramelli_. "La theologia mistica esperimentale, secondo il suo atto principale e più proprio, è una notizia pura di Dio che l' anima d'ordinario riceve nella caligine luminosa, o per di meglio nel chiaro oscuro d' un' alta contemplazione, insieme con un amore esperimentale si intimo, che la fa perdere tutta a sè stessa per unirla e transformarla in Dio."