社交场中的闲逸令人厌恶的，因为它是被迫的；孤独生活中的闲逸是愉快的，因为它是自由的、出于自愿的。

The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.

Innovation in stone extraction must always balance efficiency with sustainability.《Stone and Stewardship》

我不是一个回头看的人，我总是向前看。