But making virtue of necessity is not the same as making necessity of virtue. (newrepublic.com)
By virtue of necessity, self - published authors have to look beyond what is to what is possible. (ask.aliannedonnelly.com)
Thus, by acquaintance with the scientific outlook the growing person learns that he is neither arbitrarily autonomous nor yet wholly dependent on forces outside himself, but capable of exercising rational freedom within and by virtue of the necessities of the natural order. (religion-online.org)