The error of the ignorant goes so far as to say that God's power is insufficient, because he has given to this Universe the properties which they imagine cause these great evils, and which do not help all evil-disposed persons to obtain the evil which they seek, and to bring their evil souls to the aim of their desires, though these, as we have shown, are really without limit.

Ch.12 - Guide for the Perplexed (c. 1190) - Part III