Impressible

You are excessively impressible.

Source: tatoeba (10938339)

This home, so new to her, was equally for me the oldest, the most familiar of all places on the earth; whose least details, whose feeblest blade of grass were known to me since the earliest and most impressible days of my existence.

Source: tatoeba (11857242)

Like other men who have little religion, Mr. Paul Dangerfield had a sort of vague superstition. He was impressible by omens, though he scorned his own weakness, and sneered at, and quizzed it sometimes in the monologues of his ugly solitude.

Source: wiktionary

The differences of impressible and not impressible; figurable and not figurable; mouldable and not mouldable; scissile and not scissile; and many other passions of matter, are plebeian notions, applied unto the instruments and and uses which men ordinarily practise; but they are all but the effects of some of these causes following, which we will enumerate without applying them, because that would be too long.

Source: wiktionary