Bleus

“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... surprising things can happen to any one who, when a disagreeable or discouraged thought comes into his mind, just has the sense to remember in time and push it out by putting in an agreeable determinedly courageous one. Two things cannot be in one place.

"Where you tend a rose, my lad, A thistle cannot grow.”
― Frances Hodgson Burnett, The Secret Garden

“Grown-ups don't look like grown-ups on the inside either. Outside, they're big and thoughtless and they always know what they're doing. Inside, they look just like they always have. Like they did when they were your age. Truth is, there aren't any grown-ups. Not one, in the whole wide world.”
― Neil Gaiman, The Ocean at the End of the Lane

“It made her think that it was curious how much nicer a person looked when he smiled. She had not thought of it before.”
― Frances Hodgson Burnett, Secret Garden

“Much more surprising things can happen to anyone who, when a disagreeable or discouraged thought comes into his mind, just has the sense to remember in time and push it out by putting in an agreeable, determinedly courageous one. Two things cannot be in one place.”
― Frances Hodgson Burnett, The Secret Garden