⋅Classifying the stars has helped materially in all studies of the structure of the universe. /Annie Jump Cannon/

⋅No greater problem is presented to the human mind. /Annie Jump Cannon/

⋅Teaching man his relatively small sphere in the creation, it also encourages him by its lessons of the unity of Nature and shows him that his power of comprehension allies him with the great intelligence over-reaching all. /Annie Jump Cannon/