Know how to take your own part. In great crises there is no better companion than a bold heart, and if it becomes weak it must be strengthened from the neighboring parts. Worries die away before a man who asserts himself. One must not surrender to misfortune, or else it would become intolerable. Many men do not help themselves in their troubles, and double their weight by not knowing how to bear them. He that knows himself knows how to strengthen his weakness, and the wise man conquers everything, even the stars in their courses.
以上是西班牙的葛拉西安（Baltasar Gracian, 1601~1658）的《智慧书》中一段话:
知道如何利用自己的优势。危难之时，勇敢的心就是最好的伙伴。如果心开始脆弱，最好求助于近旁的能量使之加强。意志坚定的人，忧虑自然会消失。千万别向苦难投降，否则不幸会让你无法忍受。面对困境时，很多人不自救，且不懂得怎样去接受并承认，于是苦上加苦。了解自己的人懂得如何加强自己的弱项；明智之人可以征服一切，甚至包括他们的命运。
