Thus I am not disputing this vital fact which the classical economists have (rightly) asserted as indefeasible.

因此，我不是在质疑古典经济学家（正确地）断言为不可这重要实。

Alone in the world, cast off by it, and with this sole treasure to keep her heart alive, she felt that she possessed indefeasible rights against the world, and was ready to defend them to the death.

独在这个世界上， 被它抛弃了，有了这个唯宝物来维持她心， 她觉得她拥有对抗这个世界不可剥夺权利， 并准备誓死捍卫它们。