Henry Clarence Thiessen quotes:

Man's want of original righteousness and of holy affections toward God, and the corruption of his moral nature and his bias toward evil is called depravity

Satan's temptation may be summed up as appealing to man in this way: it made man desire to have what God had forbidden, to know what God had not revealed, and to be what God had not intended for him to be

Sin is present in everyone as a nature before it expresses itself in deeds

The Bible is to the theologian what nature is to the scientist, a body of unorganized, or only partly organized facts. God has not seen fit to write the Bible in the form of a systematic theology; it remains for us, therefore, to gather together the scattered facts and to build them up into a logical system.

Man's will is free in the sense that man can choose to do anything in keeping with his nature . . . Man's will is not free in that he is limited to his nature