Quote by Immanuel Kant
"Every human being is bound by his own private moral law."
More from Immanuel Kant
"Act only according to that maxim whereby you can at the same time will that it should become a universal law."
"Sapere aude! Dare to know! Have courage to use your own understanding."
"Two things awe me most: the starry sky above and the moral law within."
"Happiness is not an ideal of reason but of imagination."