“Toute intuition sans concept n'aboutit pasTout concept sans intuition est vide”

“Thoughts without content are empty, intuitions without concepts are blind.”

“Beauty presents an indeterminate concept of Understanding, the sublime an indeterminate concept of Reason.”

“Une politique valable ne peut faire un pas sans rendre hommage à la morale.”

“It is of great consequence to have previously determined the concept that one wants to elucidate through observation before questioning experience about it; for one finds in experience what one needs only if one knows in advance what to look for.”

“...new prejudices will serve as well as old ones to harness the great unthinking masses.For this enlightenment, however, nothing is required but freedom, and indeed the most harmless among all the things to which this term can properly be applied. It is the freedom to make public use of one's reason at every point. But I hear on all sides, 'Do not argue!' The Officer says: 'Do not argue but drill!' The tax collector: 'Do not argue but pay!' The cleric: 'Do not argue but believe!' Only one prince in the world says, 'Argue as much as you will, and about what you will, but obey!' Everywhere there is restriction on freedom.”

“Denken zonder ervaring is leeg, maar ervaring zonder denken is blind.”