He who loves God cannot endeavor that God should love him in return.
真相很少是纯粹的，也从来不是简单的。
在数学中，从困惑到清晰的旅程是最有价值的体验。
意指任何收获都需要付出相应的代价。
Every tree we plant today is an investment in tomorrow's clean air, stable climate, and thriving ecosystems.