Cheerfulness in most cheerful people is the rich and satisfying result of strenuous discipline.
The best way to cheer yourself up is to try to cheer somebody else up.
Cheerfulness is the friend and helper of all good graces and makes the mind virtuous in the pursuit of virtuous actions.
There is nothing in the world so irresistibly contagious as laughter and good humor.
A cheerful frame of mind, reinforced by relaxation... is the medicine that puts all ghosts of fear on the run.