Tertullian

“ Trees, therefore, have ability or knowledge; and they derive it from whence they also derive vitality—that is, from the one source of vitality and knowledge which is peculiar to their nature, and that from the infancy which they, too, begin with. For I observe that even the vine, although yet tender and immature, still understands its own natural business, and strives to cling to some support, that, leaning on it, and lacing through it, [2] it may so attain its growth. ”

“ I observe their attempts from the very first to grasp objects above them, and outrunning everything else, to hang on to the highest thing, preferring as they do to spread over walls with their leafy web and woof rather than creep on the ground and be trodden under by every foot that likes to crush them. ”

“ How does it happen that he is irritated and quieted, if not by help of his initial intellect? It would be very strange indeed that infancy were naturally so lively, if it had not mental power; and naturally so capable of impression and affection, if it had no intellect. ”

“ Trees, for instance, to quote Aristotle’s example, [1] have vitality, but have not knowledge; and with him agrees every one who gives a share to all animated beings of the animal substance, which, according to our view, exists in man alone as his special property,—not because it is the work of God, which all other creatures are likewise, but because it is the breath of God, which this (human soul) alone is, which we say is born with the full equipment of its proper faculties. ”

“ Indeed, without waiting for the husbandman’s training, without an espalier, without a prop, whatever its tendrils catch, it will fondly cling to, [3] and embrace with really greater tenacity and force by its own inclination than by your volition. It longs and hastens to be secure. ”