“Virtue ethics lacks a decision-procedure to help us make moral decisions. It is not, therefore, a good moral theory.”
"The greatest happiness principle holds that actions are right in proportion as they tend to promote happiness, wrong as they tend to produce the reverse of happiness. By happiness is intended pleasure, and the absence of pain; by unhappiness, pain, and the privation of pleasure." (Mill, 1907 ch.2)
“Act only according to that maxim whereby you can at the same time will that it should become a universal law." (Kant,1785)
'Virtue, then, is a state of character concerned with choice, lying in a mean, i.e., the mean relative to us, this being determined by a rational principle, and by that principle by which the man of practical wisdom would determine it.' (Nicomachean Ethics, II.6, 1106b36-1107a2).