The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.
小規(guī)模養(yǎng)殖戶是這個行業(yè)的支柱，他們的知識是無價的。
科學(xué)中最重要的不是技術(shù)，而是你提出的問題。
Every mathematical problem has a solution; it just takes time and creativity to find it.
Laws, in their most general signification, are the necessary relations arising from the nature of things.