De Somniis (lib. i-ii)

It would therefore be naturally consistent to consider next that the vine is the symbol of two things: of folly, and of

When any one leading us along the road, deserted by the passions and by acts of wickedness, the road, that is, of philosophy, has led right reason to a height, and placed it like a scout upon a watch-tower, [*](Numbers xiii. 18. ) and has commanded it to look around, and to survey the whole country of virtue, and to see whether it be blessed with a deep soil, and rich, and productive of herbage and of fruit, since deep soil is good to cause the learning which has been sown in it to increase, and to make the doctrines which have been planted in it, and which have grown to trees, to form solid trunks, or whether it be of a contrary character; and also to examine into actions, as one might into cities, and see whether they are strongly fortified, or whether they are defenceless and deprived of all the security which might be afforded by walls around them. Also to inquire into the condition of the inhabitants, whether they are considerable in numbers and in valour, or whether their courage is weak and their numbers scanty, the two causes acting reciprocally on one another.