The possession of power inevitably spoils the free use of reason.
Reason should investigate its own parameters before declaring its omniscience.
The possession of power unavoidably spoils the free use of reason
Reason does not work instinctively, but requires trial, practice, and instruction in order to gradually progress from one level of insight to another
Human reason is by nature architectonic.
It is never too late to become reasonable and wise.
Reason can never prove the existence of God.
The only objects of practical reason are therefore those of good and evil. For by the former is meant an object necessarily desired according to a principle of reason; by the latter one necessarily shunned, also according to a principle of reason.
Beauty presents an indeterminate concept of Understanding, the sublime an indeterminate concept of Reason.
Nothing is divine but what is agreeable to reason.
Philosophical knowledge is the knowledge gained by reason from concepts ; mathematical knowledge is the knowledge gained by reason from the construction of concepts.
Man relates to material things through direct insight rather than reason.
All our knowledge begins with the senses,
There is nothing higher than reason.