Hence if we get the engine right, the lungs doing their duty, the skin acting as it should, and the bowels and kidneys taking off the waste products, we generally find a robust man, little given to that most expensive habit, "worry." Fear is the forerunner of illness.
There is nothing quite so effective in producing a bad condition of the human system as fear, and this fear is what worry develops into; later it becomes pure, downright cowardice.
Worry makes cowards.

If a man has enough worry and anxiety, fear follows in its wake, and then the man becomes a mental and moral and often a physical coward.
THE FATAL MISTAKE The average man, when he is pressed to overwork, thinks that by cutting out some of his exercise and devoting that extra time to his work he can accomplish more.

There never was a greater mistake; in the long run this method is the most expensive of all.

No factory manager would think of running his automatic machines twice as long with half the amount of oil, and yet that is just what the man is trying to do in this case.

The result is that he gradually piles up the various toxic products within himself until self-poisoning is inevitable.