Though all rivers flow into it, the sea never overflows.
More Chinese Proverbs:
You can't catch a cub without going into the tiger's den.Chinese
You cannot cook two meals in the same pot.
Chinese
Learning is like rowing upstream: not to advance is to drop back.
Chinese
Don't promise something when you are full of joy; don't answer letters when you are full of anger.
Chinese
With time and patience the mulberry leaf becomes a silk gown.
Chinese
The thoughtless person buries a well when he is thirsty.
Chinese