Gain may be temporary and uncertain; but ever while you live, expense is constant and certain: and it is easier to build two chimneys than to keep one in fuel.
Promises may get thee friends, but non-performance will turn them into enemies.
Common sense without education, is better than education without common sense.
Spare when young, and spend when old.
Leisure is the time for doing something useful.
Can anything be constant in a world which is eternally changing?