Alexander von Humboldt Quotes: Courage and Restraint in Science – Inspiring Wisdom

"You wonder that there are so few followers of the Pythagorean opinion [that the earth moves] while I am astonished that there have been any up to this day who have embraced and followed it. Nor can I ever sufficiently admire the outstanding acumen of those who have taken hold of this opinion and accepted it as true: they have, through sheer force of intellect, done such violence to their own senses as to prefer what reason told them over that which sensible experience plainly showed them to be the contrary. For the arguments against the whirling [the rotation] of the earth we have already examined are very plausible, as we have seen; and the fact that the Ptolemaics and the Aristotelians and all their disciples took them to be conclusive is indeed a strong argument of their effectiveness. But the experiences which overtly contradict the annual movement [the movement of the earth around the sun] are indeed so much greater in their apparent force that, I repeat, there is no limit to my astonishment when I reflect that Aristarchus and Copernicus were able to make reason so conquer sense that in defiance of the latter, the former became mistress of their belief." Salviati

"If we consider that the advocates of the fixed and central position of the Earth can explain the heavenly phenomena as accurately, according to their own understanding, as we do, and that they additionally have the evidence of their senses, the Holy Scripture, and the facts on their side which we do not have, it is not without reason that they claim the superiority of their system. [...] However perfect our theoretical model may appear in our eyes, and however simple and satisfactory the Newtonian hypothesis may appear to us in explaining all celestial phenomena, here we must admit the astonishing truth that if our premises are challenged and our facts questioned, all of astronomy contains no proof of its own accuracy." Dr. Robert Woodhouse