The fourth (of the four cardinal virtues) is supportiveness: this manifests as service to others without expectation of reward. (Paraphrased: Such service is not a mere conforming to some external rule of behavior, but instead a manifestation of your original nature).
Those who know don't talk. Those who talk don't know. Close your mouth, block off your senses, blunt your sharpness, untie your knots, soften your glare, settle your dust. This is the primal identity. Be like the Tao. It can't be approached or withdrawn from, benefited or harmed, honored or brought into disgrace. It gives itself up continually. That is why it endures.
When virtue is lost, benevolence appears, when benevolence is lost right conduct appears, when right conduct is lost, expedience appears. Expediency is the mere shadow of right and truth; it is the beginning of disorder.
The very highest is barely known.
Then comes that which people know and love,
Then that which is feared,
Then that which is despised.
Who does not trust enough will not be trusted.
So sometimes things are ahead and sometimes they are behind; Sometimes breathing is hard, sometimes it comes easily; Sometimes there is strength and sometimes weakness; Sometimes one is up and sometimes down. Therefore the sage avoids extremes, excesses, and complacency.
Always without desire we must be found, If its deep mystery we would sound; But if desire always within us be, Its outer fringe is all that we shall see.
Acting without design, occupying oneself without making a business of it, finding the great in what is small and the many in the few, repaying injury with kindness, effecting difficult things while they are easy, and managing great things in their beginnings; this is the method of Tao.
If you go searching for the Great Creator, you will come back empty-handed. The source of the universe is ultimately unknowable, a great invisible river flowing forever through a vast and fertile valley. Silent and uncreated, it creates all things.
Can you deal with the most vital matters by letting events take their course? Can you step back from you own mind and thus understand all things? Giving birth and nourishing, having without possessing, acting with no expectations, leading and not trying to control: this is the supreme virtue.
When the great Tao is forgotten, goodness and piety appear. When the body's intelligence declines, cleverness and knowledge step forth. When there is no peace in the family, filial piety begins. When the country falls into chaos, patriotism is born.