It is therefore correct to say that the senses do not err — not because they always judge rightly, but because they do not judge at all. - Immanuel Kant

No one may force anyone to be happy according to his manner of imagining the well-being of other men; instead, everyone may seek his happiness in the way that seems good to him as long as he does not infringe on the freedom of others to pursue a similar purpose, when such freedom may coexist with the freedom of every other man according to a possible and general law.

...[P]hysics... [is] the philosophy of nature, so far as it is based on empirical laws.

If there is any science man really needs it is the one I teach, of how to occupy properly that place in creation that is assigned to man, and how to learn from it what one must be in order to be a man.