土积而成山阜，水积而成江河。
出自汉·桓宽《盐铁论·执务》。阜，土山。土积得多便会成山，水积得多便成江河。此以积土成山、积水成河为喻，说明积少成多、凡事要从一点一滴做起的道理。
知识就是力量，但学习是超能力。
"In the realm of literature, there are no boundaries, only endless possibilities."
The great ideological battles between liberalism and communism, or between democracy and authoritarianism, have been replaced by a general consensus on the desirability of liberal democracy.
Every word is a step towards understanding.
The true cost of energy must account for both its production and its legacy.
The only thing of value is the thing you cannot buy.