Definition for Empiricism
From Biology Forums Dictionary
1) An approach to investigation which relies upon observation of the subject under study. Like Rationalism, Empiricism can trace its pedigree at least to the Pre-Socratics, if we can take Heraclitus’ statement about eyes and ears as best witnesses at face value.
2) The theory that all human knowledge comes from the evidence of our five senses, and therefore we can never know more, or know with greater certainty, than our senses will allow. Perhaps the most famous exemplars of this view are Locke, Berkeley, and Hume, the so-called ‘British Empiricists.’