This is an audiobook of Bodhi Leaves No. 72, 'The Development of the Will' and 'Perfection of Energy' found in the Pariyatti Edition of Collected Bodhi Leaves Vol. III as well as at Buddhist Publication Society as a free eBook download.

Excerpt from The Development of Will by Wladyslaw Misiewicz

No force in the human system can be properly used unless it is rightly directed. As the will is the only factor in man that has the power to direct or control, a thorough development of the will becomes absolutely necessary in order to have a clear understanding of its application under every circumstance.

From Perfection of Energy by Shantideva

Having become patient [through practising the Perfection of Forbearance], one should cultivate energetic effort; for it is by effort that Enlightenment is gained. Just as there is no movement without wind, there is no performance of merit without energy.