Quote by John Dalton
"Perseverance in observation and calculation has revealed more truth than a thousand idle speculations."
More from John Dalton
"Matter cannot be created, destroyed, or changed into a different substance by ordinary chemical processes."
"Nothing in the world happens by chance. Everything obeys immutable laws."
"The chemical elements are the ultimate constituents of matter."
"All matter is composed of atoms, which are indivisible and indestructible."