Nothing is in the intellect that was not first in the senses, except the intellect itself.
Nihil est in intellectu quod non fuerit in sensu, nisi intellectus ipse.

Psychologists
Wilhelm Wundt
German physiologist (1832-1920). Founded the first psychology lab at Leipzig in 1879, marking psychology's birth as an independent science. Father of experimental psychology and teacher of America's first psychologists.
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Wilhelm Wundt's Other Quotes
Related Quotes
All things are ungraspable.
-- Pyrrho
Color exists by convention, sweet by convention, bitter by convention; in reality there are only atoms and void.
-- Democritus
I know that I know nothing.
-- Socrates
You must learn all things: both the steadfast heart of well-rounded Truth and the opinions of mortals, in which there is no true trust.
-- Parmenides
For thinking and Being are the same.
-- Parmenides
Imagine prisoners chained underground since childhood, seeing only shadows on a wall and taking them for reality.
-- Plato