Václav Havel said that politics and intellectuals can be linked, but that responsibility for their ideas, even when advocated by a politician, remains with the intellectual.
== Orientabilnost ploskev ==Ploskev formula_1 v evklidskem prostoru formula_2 je orientabilna, če ne moremo dvorazsežne oblike (na primer ) premakniti po ploskvi in nazaj na začetno točko tako, da izgleda kot zrcalna slika prvotne oblike.