{28}
Let us then blush, in this so ample and so wonderful field of nature
(where performance still exceeds what is promised), to credit other
men's traditions only, and thence come uncertain problems to spin
out thorny and captious questions. Nature herselfe must be our
adviser; the path she chalks must be our walk; for so while we
confer with our own eies, and take our rise from meaner things to
higher, we shall at length be received into her closet-secrets.
--Preface to _Anatomical Exercitations concerning the Generation
of Living Creatures_, 1653. William Harvey.
{29}