We must balance short-term energy needs with long-term environmental goals.
心理学概念的价值在于其生活应用。
学习是系统中产生的任何变化,这些变化或多或少会永久性地改变其适应环境的能力。
酸和碱不是绝对的,而是相对的。
"Sometimes, you have to be apart from people you love, but that doesn't make you love them any less. Sometimes, it makes you love them more."
Only if we understand, can we care. Only if we care, will we help. Only if we help, shall all be saved.