Sustainable quarrying isn't an option; it's our obligation to future generations.

He walked out in the gray light and stood and he saw for a brief moment the absolute truth of the world. The cold relentless circling of the intestate earth. Darkness implacable. The blind dogs of the sun in their running. The crushing black vacuum of the universe. And somewhere two hunted animals trembling like ground-foxes in their cover. Borrowed time and borrowed world and borrowed eyes with which to sorrow it.

To live remains an art which everyone must learn，and which no one can teach.

活出你自己的梦想，而不是他人的期望。