The imagination acquires by custom a certain involuntary, unconscious power of observation — Edward Bulwer-Lytton, 1st Baron Lytton
I am not accustomed to saying anything with certainty after only one or two observations. — Andreas Vesalius
The entire annals of Observation probably do not elsewhere exhibit so extraordinary — John Pringle Nichol
Talent is a long patience, and originality an effort of will and intense observation. — Gustave Flaubert
Drawing instruction is a training towards perception, exact observation and exact presentation — Wassily Kandinsky
Self-observation brings man to the realization of the necessity of self-change. And — G. I. Gurdjieff
Thus even supposedly unadulterated facts of observation already are interfused with all — Ludwig von Bertalanffy
Awareness is observation without choice, condemnation, or justification. Awareness is silent observation — Jiddu Krishnamurti
All interpretation or observation of reality is necessarily fiction. In this case, — Carlos Ruiz Zafon
In fact, current cosmological observations indicate that the average density of matter — Victor J Stenger