"The numbers may be said to rule the whole world of quantity, and the four rules of arithmetic may be regarded as the complete equipment of the mathematician."

"In a few years, all great physical constants will have been approximately estimated, and that the only occupation which will be left to men of science will be to carry these measurements to another place of decimals."

"In Science, it is when we take some interest in the great discoverers and their lives that it becomes endurable, and only when we begin to trace the development of ideas that it becomes fascinating."

"I have looked into most philosophical systems and I have seen that none will work without God."

"Thoroughly conscious ignorance is the prelude to every real advance in science."

"In every branch of knowledge the progress is proportional to the amount of facts on which to build, and therefore to the facility of obtaining data."

"The only laws of matter are those that our minds must fabricate and the only laws of mind are fabricated for it by matter."

"We can scarcely avoid the inference that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena."

"The student who uses home made apparatus, which is always going wrong, often learns more than one who has the use of carefully adjusted instruments, to which he is apt to trust and which he dares not take to pieces."

"All the mathematical sciences are founded on the relations between physical laws and laws of numbers."

"It is of great advantage to the student of any subject to read the original memoirs on that subject, for science is always most completely assimilated when it is in the nascent state."

"Heat may be generated and destroyed by certain processes, and this shows that heat is not a substance."

"Gin a body meet a body Flyin' through the air, Gin a body hit a body, Will it fly? and where?"

"The chief philosophical value of physics is that it gives the mind something distinct to lay hold of, which, if you don't, Nature at once tells you you are wrong."

"Colour as perceived by us is a function of three independent variables at least three are I think sufficient, but time will show if I thrive."

"The 2nd law of thermodynamics has the same degree of truth as the statement that if you throw a tumblerful of water into the sea, you cannot get the same tumblerful of water out again."

"Francis Galton, whose mission it seems to be to ride other men's hobbies to death, has invented the felicitous expression 'structureless germs'."

"The mathematical difficulties of the theory of rotation arise chiefly from the want of geometrical illustrations and sensible images, by which we might fix the results of analysis in our minds."

"What's the go of that? What's the particular go of that?"

"Thus number may be said to rule the whole world of quantity, and the four rules of arithmetic may be regarded as the complete equipment of the mathematician."

"Every time history repeats itself, the price goes up. —Memoirs of Emperor Xenovere I, page 286,"

"One of the weaknesses of our age is our apparent inability to distinguish our need from our greed."

"Faraday is, and must always remain, the father of that enlarged science of electromagnetism."

"Choose your ground well. War is a game of geography."