The most tyrannical of governments are those which make crimes of opinions, for everyone has an inalienable right to his thoughts.
Be not astonished at new ideas; for it is well known to you that a thing does not therefore cease to be true because it is not accepted by many.
Many errors, of a truth, consist merely in the application of the wrong names of things.
Many errors, of a truth, consist merely in the application of the wrong names of things. For if a man says that the lines which are drawn from the centre of the circle to the circumference are not equal, he understands by the circle, at all events for the time, something else than mathematicians understand by it.