If not now, when?

“If I am not for myself, who is for me? And if I am only for myself, what am I? …”

“If I am not for myself - who will be for me? If I am only for myself, who am I?…”

“If I am not for myself, who will be for me? If I am not for others, what am I? …”

“If I am not for myself, who will be for me? If I am not for others, what am I? …”