All men are born in a sinful state and condition, which is called original sin, and is the root of all the actual sins that are committed. This includes both guilt and pollution. The guilt of Adam's sin is imputed to us. Because he sinned as our representative, we are guilty in him. Moreover, we also inherit his pollution, and now have a positive disposition toward sin.
Man is by nature totally depraved.
This does not mean that every man is as bad as he can be, but that sin has corrupted every part of his nature and rendered him unable to do any spiritual good. He may still do many praiseworthy things in relation to his fellow-beings, but even his best works are radically defective, because they are not prompted by love to God nor done in obedience to God. The term 'actual sin' denotes not only sins consisting in outward acts, but also those conscious thoughts, desires, and decisions that proceed from original sin. They are the sins which the individual performs in distinction from his inherited nature and inclination. While original sin is one, actual sins are manifold.