Think big, think long.
想得大,想得远。
孔子说:“有一种人,不了解情况就冒然行事,我不会这样。多听,向先进人物学习;多看,把细节牢记在心。就是掌握知识的最好方法。”
I never buy anything unless I can give a good reason why I think it will go up.