Giuseppe Peano Quotes and Sayings  Page 1

“No number before zero. The numbers may go on forever, but like the cosmos, they have a beginning.”
 Giuseppe Peano 
“Questions that pertain to the foundations of mathematics, although treated by many in recent times, still lack a satisfactory solution. Ambiguity of language is philosophy's main source of problems. That is why it is of the utmost importance to examine attentively the very words we use.”
 Giuseppe Peano 
“In every science, after having analysed the ideas, expressing the more complicated by means of the more simple, one finds a certain number that cannot be reduced among them, and that one can define no further. These are the primitive ideas of the science; it is necessary to acquire them through experience, or through induction; it is impossible to explain them by deduction.”
 Giuseppe Peano 
“Certainly it is permitted to anyone to put forward whatever hypotheses he wishes, and to develop the logical consequences contained in those hypotheses. But in order that this work merit the name of Geometry, it is necessary that these hypotheses or postulates express the result of the more simple and elementary observations of physical figures.”
 Giuseppe Peano 
“Geometric calculus consists in a system of operations analogous to those of algebraic calculus, but in which the entities on which the calculations are carried out, instead of being numbers, are geometric entities which we shall define.”
 Giuseppe Peano 
“1. 0 is a number.2. The immediate successor of a number is also a number.3. 0 is not the immediate successor of any number.4. No two numbers have the same immediate successor.5. Any property belonging to 0 and to the immediate successor of any number that also has that property belongs to all numbers.”
 Giuseppe Peano
You may also like:

Albert Einstein
Theoretical Physicist 
Alfred North Whitehead
Mathematician 
Alfred Tarski
Logician 
Augustus De Morgan
Mathematician 
Bertrand Russell
Philosopher 
Carl Friedrich Gauss
Mathematician 
Charles Sanders Peirce
Philosopher 
David Hilbert
Mathematician 
Felix Klein
Mathematician 
Georg Cantor
Mathematician 
George Boole
Mathematician 
Gottfried Leibniz
Mathematician 
Gottlob Frege
Mathematician 
Henri Poincare
Mathematician 
Immanuel Kant
Philosopher 
Karl Weierstrass
Mathematician 
Kurt GÃ¶del
Logician 
Nikolai Lobachevsky
Mathematician 
Richard Courant
Mathematician 
Richard Dedekind
Mathematician