关于"play safe"（注意安全）的名言及相关表达，综合权威资料整理如下：

一、基础安全警示类

1. "Play safe, play smart, play polo!"（马球运动中的安全理念，强调智慧与安全的结合）

2. "When we play in the park, remember always safety first. Be careful not to get hurt."（公园玩耍时需牢记安全第一）

3. "Watch out! It's better to lose one minute of your life than your life in one minute."（谨记：失去一分钟生命不值一分钟）

二、处世哲学延伸类

1. "If you play your cards right, you could make quite a lot of money out of this."（处事得当可获丰厚收益）

2. "To play it safe, I'd allow an extra ten minutes, just in case."（为安全起见，多预留十分钟）

3. "Don't cut too much off at first to play it safe."（初试时保留余地更稳妥）

三、生活智慧类

1. "Playing with fire is not a good idea. You're playing with fire."（玩火危险，需谨慎行事）

2. "A stitch in time saves nine. Don't wait until it's too late to play safe."（未雨绸缪胜于临阵磨枪）

3. "The best preparation for tomorrow is doing your best today."（今日努力是明日的最佳保障）

注：建议根据具体语境选择适用表达，例如教育场景优先采用基础警示类，职场建议融入处世哲学类，日常交流则可用生活智慧类。