Janus , a very ancient Italian deity who presided over the beginning of the several divisions of time, as well as the beginning of all enterprises, in connection with which he was worshipped; he had two heads, or faces, one of which looked behind into the past and the other before into the future, and this power of penetrating into both it is said Saturn endowed him with as a reward for receiving him on earth when he was driven out of heaven.
— from The Nuttall Encyclopædia Being a Concise and Comprehensive Dictionary of General Knowledge by P. Austin Nuttall

In this way I do not interfere with the similar pursuit of happiness of anyone else, since the other man goes on the Bourse just as voluntarily as I do, and at the conclusion of his affairs a sentimental expression, for each finds in the other the satisfaction of his pursuit of happiness which it is just the business of love to bring about, and which it here practically accomplishes.
— from Feuerbach: The roots of the socialist philosophy by Friedrich Engels