It was an important part of Mendelssohn's philosophical and religious view that the traditional rationalist proofs for God's existence should be sound an convincing. Kant thought they were not. So Kant's critique was world-shaking for Mendelssohn.
Allen W. WoodPeople are often most proud of precisely those things of which they should most be ashamed.
Allen W. WoodKant considers belief in God and immortality to be items of "faith" because he relates faith to the pursuit of ends - in this case, the highest good.
Allen W. WoodWhen Marx, in the Theses on Feuerbach, says that only idealism up to now has understood the active side of material Praxis, what he says is more true of Fichte than of any other philosopher in the classical German tradition.
Allen W. Wood