Whether every religious is bound to keep all the counsels?

Objections

Objection 1 : It would seem that every religious is bound to keep all the counsels. For whoever professes a certain state of life is bound to observe whatever belongs to that state. Now each religious professes the state of perfection. Therefore every religious is bound to keep all the counsels that pertain to the state of perfection.
Objection 2 : Further, Gregory says (Hom. xx in Ezech.) that "he who renounces this world, and does all the good he can, is like one who has gone out of Egypt and offers sacrifice in the wilderness." Now it belongs specially to religious to renounce the world. Therefore it belongs to them also to do all the good they can. and so it would seem that each of them is bound to fulfil all the counsels.
Objection 3 : Further, if it is not requisite for the state of perfection to fulfil all the counsels, it would seem enough to fulfil some of them. But this is false, since some who lead a secular life fulfil some of the counsels, for instance those who observe continence. Therefore it would seem that every religious who is in the state of perfection is bound to fulfil whatever pertains to perfection: and such are the counsels.