If it were left to sinners, totally depraved as they are, to respond of their own volition to the gospel in faith, not one would respond.
R. B. Kuiper
Depravity of Man
Wrong views about holiness are generally traceable to wrong views about human corruption.
— J. C. Ryle
Depravity of Humanity
Our nature is not only completely empty of goodness, but so full of every kind of wrong that it is always active.
— John Calvin