Nay more, I declare openly that for these uses the philosophy which I bring forward will not be much available.

It does not lie in the way.

It cannot be caught up in passage.

It does not flatter the understanding by conformity with preconceived notions.
Nor will it come down to the apprehension of the vulgar except by its utility and effects.
Let there be therefore (and may it be for the benefit of both) two streams and two dispensations of knowledge; and in like manner two tribes or kindreds of students in philosophy--tribes not hostile or alien to each other, but bound together by mutual services;--let there in short be one method for the cultivation, another for the invention, of knowledge.
And for those who prefer the former, either from hurry or from considerations of business or for want of mental power to take in and embrace the other (which must needs be most men's case), I wish that they may succeed to their desire in what they are about, and obtain what they are pursuing.

But if any man there be who, not content to rest in and use the knowledge which has already been discovered, aspires to penetrate further; to overcome, not an adversary in argument, but nature in action; to seek, not pretty and probable conjectures, but certain and demonstrable knowledge;--I invite all such to join themselves, as true sons of knowledge, with me, that passing by the outer courts of nature, which numbers have trodden, we may find a way at length into her inner chambers.