Quote by Kant, Immanuel
"Nature is not man's mother; it is his teacher."
More from Kant, Immanuel
"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 the courage to use your own understanding."
"Two things awe me most: the starry sky above and the moral law within."
"I am never content with myself in relation to my knowledge and virtue."