"With the exception of the formal principle of the Reformation, namely, the truth of the Scriptures, the basis of the Christian faith is the doctrine of the Trinity. Nothing is more fundamental." -- Dr. Gordon Clark
"...the whole substance of Christianity (is) a knowledge, first, of the mode in which God is worshiped; and, secondly, of the source from which salvation is to be obtained. When these are kept out of view, though we may glory in the name of Christians, our profession is empty and vain." -- John Calvin
"Ever stand by the good old Calvinistic banner, the banner which Augustine waved of old, and which Paul handed down to us direct from our master Jesus; and hold, believe, and affirm, never swerving from it, that all things in the new creation are of God." -- Charles H. Spurgeon, from the sermon "High Doctrine," June 3rd, 1860
SOLA SCRIPTURA means "Scripture (the Bible) Alone.
"All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, throughly furnished unto all good works." (2 Timothy 3:16-17).