Daniel Altschuler

“In dark ages people are best guided by religion, as in a pitch-black night a blind man is the best guide; he knows the roads and paths better than a man who can see. When daylight comes, however, it is foolish to use blind, old men as guides.”
― Heinrich Heine

“The diversity of different kinds of eyes alone is astonishing, and yet makes sense in relation to the environments in which different animals live. Eyes for seeing underwater are different from those for seeing in air, and the eyes of predators have special adaptations to break the camouflage of prey that have evolved to be difficult to see.”
― Brian Charlesworth, Evolution: A Very Short Introduction

“Mathematics as an expression of the human mind reflects the active will, the contemplative reason, and the desire for aesthetic perfection. Its basic elements are logic and intuition, analysis and construction, generality and individuality.”
― Herbert Robbins, What Is Mathematics?: An Elementary Approach to Ideas and Methods

“Whatever our philosophical standpoint may be, for all purposes of scientific observation an object exhausts itself in the totality of possible relations to the perceiving subject or instrument.”
― Herbert Robbins, What Is Mathematics?: An Elementary Approach to Ideas and Methods