In conversation seek not so much either to vent thy knowledge, or to
increase it, as to know more spiritually and effectually what thou
dost know. And in this way those mean despised truths, that everyone
thinks he is sufficiently seen in, will have a new sweetness and use
in them, which thou didst not so well perceive before (for these
flowers cannot be sucked dry), and in this humble sincere way thou
shalt _grow in grace and in knowledge_ too.