Hard Quote by Carl Sagan

When Kepler found his long-cherished belief did not agree with the most precise observation, he accepted the uncomfortable fact. He preferred the hard truth…

— Anonymous

“The Somnium makes clear to us, although it did not to all of Kepler’s contemporaries, that “in a dream one must be allowed the…

— Carl Sagan

“Magnetism is, of course, not the same as gravity, but Kepler’s fundamental innovation here is nothing short of breathtaking: he proposed that quantitative physical…

— Carl Sagan

“THE DANGEROUS VICE OF ASKING Which is worth more? Experience or doctrine? By dropping stones and pebbles, big balls and little balls, Galileo Galilei…

— Eduardo Galeano

“If a marker were to be erected today, it might read, in homage to his scientific courage: “He preferred the hard truth to his…

— Carl Sagan

“What a deep [trust] in the rationality of the structure of the world and what a longing to understand even a small glimpse of…

— Albert Einstein

“Kepler and Newton represent a critical transition in human history, the discovery that fairly simple mathematical laws pervade all of Nature; that the same…

— Carl Sagan

I measured the skies, now the shadows I measure, Sky-bound was the mind, earth-bound the body rests. [Kepler's epitaph]

— Johannes Kepler

[Newton wrote to Halley ... that he would not give Hooke any credit] That, alas, is vanity. You find it in so many scientists.…

— Albert Einstein

“Diligence and attention soon gave him the knack of it, and he strode down the street with his mouth full of harmony and his…

— Mark Twain

Among the great men who have philosophized about [the action of the tides], the one who surprised me most is Kepler. He was a…

— Galileo Galilei

The heavens declare the glory of Kepler and Newton.

— Auguste Comte