…it is evident that movement is essential to all existence. All material things progress to a certain point, then begin to decline. This is the law which governs the whole physical creation. Now let us consider the soul. We have seen that movement is essential to existence; nothing that has life is without motion. All creation, whether of the mineral, vegetable or animal kingdom, is compelled to obey the law of motion; it must either ascend or descend. But with the human soul, there is no decline. Its only movement is towards perfection; growth and progress alone constitute the motion of the soul.
Divine perfection is infinite, therefore the progress of the soul is also infinite. From the very birth of a human being the soul progresses, the intellect grows and knowledge increases. When the body dies the soul lives on. All the differing degrees of created physical beings are limited, but the soul is limitless!
- ‘Abdu’l-Baha (From a talk, November 10th, Paris, France; ‘Paris Talks’)