生活中的唯一限制是你为自己设定的限制。
The only limits in life are the ones you set for yourself.
Investors should focus on long-term goals and ignore short-term market fluctuations.
Should you find yourself contorting to fit a system, dear reader, stop and ask if it's truly you that must change or the system.
解释：大部分鸟类都是雄性的，而雌鸽却是雌性的，说明了鸟类性别的特殊性。
