在生物圈的地质历史演化中，智慧圈是众多阶段的最后一个阶段。
The truth is not always what we want to hear.
当你足够和正确地努力了，幸福便会来敲门的。
Coal mining is a partnership between the earth and human ingenuity.
赏析：通过忘记脚、忘记腰、忘记是非纠纷来说明内心的舒适和自在，强调了要放下杂念和纷争，保持内心的平静。