Nourishment refers to much more than a healthy diet.  It is the care-giving function of man.   Eating properly implies care for oneself; providing healthy meals in the home is a sign of caring for the family; providing healthy meals for others is a sign of caring for others. The writer of a great book or composer of a wonderful piece of music also provides nourishment, in these cases to humanity in general, by caring deeply about his or her work.

You can know people by observing what they choose to nourish in their own lives.  Do they feed and develop their own bodies?  Do they cultivate their spirits, their intellects, their moral values?  Do they nourish (that is, care for) those around them, and if so, to whom do they devote their energies?   The most successful people are temperate in eating and drinking, thinking and dreaming.  They strengthen the world by nurturing the higher nature in man.

Pay heed to your inner thoughts and impulses, ignoring thoughts which can undermine a healthy and persevering attitude.  A wise person is temperate in the consumption of food and drink, because to be otherwise only leads to discomfort; the fact that temporary pleasure may precede the discomfort does not dissuade the person of mature character.  In the same way, be discriminating in your words and actions, lest a desire for temporary advantage lead you to cause pain for yourself and others.  Enrich your own character and you will naturally nourish everyone around you.