Full Idea
A very small part of this great system, during a very short time, is very imperfectly discovered to us: and do we thence pronounce decisively concerning the origin of the whole?
Gist of Idea
How can we pronounce on a whole after a brief look at a very small part?
Source
David Hume (Dialogues Concerning Natural Religion [1751], Part 2)
Book Reference
Hume,David: 'Dialogues Concerning Natural Religion' [Penguin], p.59