οὕτως ἀταλαίπωρος τοῖς πολλοῖς ἡ ζήτησις τῆς ἀληθείας, καὶ ἐπὶ τὰ ἑτοῖμα μᾶλλον τρέπονται.

So averse to taking pains are most men in the search for the truth, and so prone are they to turn to what lies ready at hand (tr. C.F. Smith).

Thucydides 1.20.3