3.
The truth of an upright man must be accepted on his own terms. Moreover, since natures vary, we must agree that all the beauties of human excellence may be fostered by faiths that we do not share.
Victor Hugo
4.
Those who are not schooled and practised in truth [who are not honest and upright men] can never manage aright the government, nor yet can those who spend their lives as closet philosophers; because the former have no high purpose to guide their actions, while the latter keep aloof from public life.
Plato