Whether fortitude is a special virtue?

Objections

Objection 1 : It seems that fortitude is not a special virtue. For it is written (Wis. 7:7): "She teacheth temperance, and prudence, and justice, and fortitude," where the text has "virtue" for "fortitude." Since then the term "virtue" is common to all virtues, it seems that fortitude is a general virtue.
Objection 2 : Further, Ambrose says (De Offic. i): "Fortitude is not lacking in courage, for alone she defends the honor of the virtues and guards their behests. She it is that wages an inexorable war on all vice, undeterred by toil, brave in face of dangers, steeled against pleasures, unyielding to lusts, avoiding covetousness as a deformity that weakens virtue"; and he says the same further on in connection with other vices. Now this cannot apply to any special virtue. Therefore fortitude is not a special virtue.
Objection 3 : Further, fortitude would seem to derive its name from firmness. But it belongs to every virtue to stand firm, as stated in Ethic. ii. Therefore fortitude is a general virtue.