Certain matters are subject to the free will of man, such as acting with justice and fairness, or injustice and iniquity—in other words, the choice of good or evil actions. It is clear and evident that the will of man figures greatly in these actions. But there are certain matters where man is forced and compelled, such as sleep, death, sickness, failing powers, misfortune, and material loss: These are not subject to the will of man and he is not accountable for them, for he is compelled to endure them. But he is free in the choice of good and evil actions, and it is of his own accord that he performs them.
—‘Abdu’l-Bahá, Some Answered Questions