If you wait until all lights are green before you leave home, you'll never get started on your trip to the top.

If you wait until all lights are green before you leave home, you'll never get started on your trip to the top.

如果你等到所有的灯都亮了才离开家，你永远也不会开始你的登顶之旅。

-- Zig Ziglar 金克拉