"The Primal Object of Education By a misconception of the true nature and object of education, many have been led into serious and even fatal errors. Such a mistake is made when the regulation of the heart or the establishment of principles is neglected in the effort to secure intellectual culture, or when eternal interests are overlooked in the eager desire for temporal advantage. CT 49"
"But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you."
Both passages emphasize prioritizing spiritual matters (God's kingdom/righteousness, regulation of the heart/establishment of principles) over temporal or intellectual pursuits. EGW's statement directly echoes the sentiment of Matthew 6:33.
"redeemed by the blood of Christ. It should rather be our aim to gain knowledge and wisdom that we may become better Christians, and be prepared for greater usefulness, rendering more faithful service to our Creator, and by our example and influence leading others also to glorify God. Here is something real, something tangible —not only words, but deeds. Not only the affections of the heart, but the service of the life, must be devoted to our Maker. CT 49.2"
"For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s."
The EGW passage directly echoes the sentiment of glorifying God because of being bought with a price (Christ's blood). It expands on this by specifying how to glorify God through service and influence.