Full Idea
From facts follow always nothing but facts.
Gist of Idea
Only facts follow from facts
Source
Edmund Husserl (Ideas: intro to pure phenomenology [1913], I.1.008)
Book Reference
Husserl,Edmund: 'Ideas: general introduction to pure phenomenology', ed/tr. Boyce Gibson,W [Routledge 2012], p.19
A Reaction
I presume objective possibilities follow from facts, so this doesn't sound strictly correct. I sounds like a nice slogan for those desiring to keep facts separate from values. [on p.53 he comments on fact/value]