The next sentence of "aim high" is: "Mu Xianxian, abandon lust, abandon stagnation", which comes from the famous saying "Zhuge Jiliang commands his nephew". Later, many people made the next sentence, such as: aim high, life is expensive to pursue; Aim high and dare to be the first in the world.
"To aim high" means to pursue lofty goals. On the road of life, we should set up lofty ideals and beliefs, keep moving forward and pursue our goals and dreams.