With the wise and prudent there is no loss of time. “Heart” and “ear” - the mind working within, or gathering from without materials for its thought - are, through this channel or that, ever gaining knowledge.
SDA Bible Commentary (limited)
Volume 1-7
15. Getteth knowledge. While wisdom is more valuable than knowledge, those who possess a measure of wise prudence will be diligent in gaining knowledge, which they will use with discretion.