The only limit is the one you set yourself.
唯一的限制是你自己设定的限制。
Little else is requisite to carry a state to the highest degree of opulence from the lowest barbarism but peace， easy taxes， and a tolerable administration of justice.
电影制作的挑战是让不可能的事情看起来可能。
The harder the battle, the sweeter the victory.