A time to. . .

I'm reading the Tao Teh Ching today, by Lao Tzu maybe. I got to chapter 29, and it said:

In fact, for all things there is a time for going ahead, and a time for following behind;
A time for slow-breathing and a time for fast-breathing;
A time to grow in strength and a time to decay;
A time to be up and a time to be down.

Does that sound familiar to you?