数学只向那些纯粹出于对其美的热爱而接近它的人揭示其秘密。
科学家的责任不仅限于实验室,还包括更广泛的社会。
"To live is the rarest thing in the world. Most people exist, that is all."
Certification standards are the compass for responsible forestry.
The truth is rarely pure and never simple.