The knowledge that will hold good in working, cleave thou to that; for Nature herself accredits that, says Yea to that. Properly thou hast no other knowledge but what thou hast got by working: the rest is yet all a hypothesis of knowledge; a thing to be argued of in schools, a thing floating in the clouds, in endless logic-vortices, till we try it and fix it. 'Doubt, of whatever kind, can be ended by Action alone.'
And again, hast thou valued Patience, Courage, Perseverance, Openness to light; readiness to own thyself mistaken, to do better next time? All these, all virtues, in wrestling with the dim brute Powers of Fact, in ordering of thy fellows in such wrestle, there and elsewhere not at all, thou wilt continually learn. Set down a brave Sir Christopher in the middle of black ruined Stone-heaps, of foolish unarchitectural Bishops, redtape Officials, idle Nell-Gwyn Defenders of the Faith; and see whether he will ever raise a Paul's Cathedral out of all that, yea or no! Rough, rude, contradictory are all things and persons, from the mutinous masons and Irish hodmen, up to the idle Nell-Gwyn Defenders, to