Quote by Annie Jump Cannon
"The work is harder than the discovery; persistence builds mastery."
More from Annie Jump Cannon
"I have always believed that astrophysics should be the most exciting of all the sciences."
"Classifying the stars has been the greatest achievement of my life."
"No human mind is capable of grasping the universe. We are like a little child entering a huge library."
"The universe is a wonderfully complicated place, and astronomy helps us understand our place in it."