IN each century since the beginning of the world
wonderful things have been discovered. In
the last century more amazing things were found
out than in any century before. In this new cen-
tury hundreds of things still more astounding will
be brought to light. At first people refuse to be-
lieve that a strange new thing can be done, then
they begin to hope it can be done, then they see
it can be done--then it is done and all the world
wonders why it was not done centuries ago. One
of the new things people began to find out in
the last century was that thoughts--just mere
thoughts--are as powerful as electric batteries--
as good for one as sunlight is, or as bad for one
as poison. To let a sad thought or a bad one get
into your mind is as dangerous as letting a scarlet
fever germ get into your body. If you let it stay
there after it has got in you may never get over it
as long as you live.

So long as Mistress Mary's mind was full of
disagreeable thoughts about her dislikes and sour

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