Quote by William Herschel
"Progress requires not genius but persistence applied to worthy questions."
More from William Herschel
"The sciences have been greatly benefited by practical mechanics, and this without doubt the case will ever remain."
"Astronomy is not less important for the knowledge of the world than geography."
"We observe a star, and from the light that reaches us we must infer all its properties."
"The great object of my life has been to observe as many celestial phenomena as possible."