"Live by old Ethicks..."

From Sir Thomas Browne's Christian Morals (google books):

Live by old Ethicks and the classical Rules of Honesty. Put no new names or notions upon Authentick Virtues & Vices. Think not that Morality is Ambulatory; that Vices in one age are not Vices in another; or that Virtues, which are under the everlasting Seal of right Reason, may be Stamped by Opinion. And therefore though vicious times invert the opinions of things, and set up a new Ethicks against Virtue, yet hold thou unto old Morality; & rather than follow a multitude to do evil, stand like Pompey's Pillar conspicuous by thy self, and single in Integrity. And since the worst of times afford imitable Examples of Virtue; since no Deluge of Vice is like to be so general, but more than eight will escape; Eye well those Heroes who have held their Heads above Water, who have touched Pitch, and not been defiled, and in the common Contagion have remained uncorrupted.