Immanuel Kant

"In the sphere of practical reason, faith may be necessary where knowledge is impossible."

"To have character is to be capable of self-control and moral discipline."

"Nature gives man nothing that he can accomplish by his own power."

"Enlightenment is the release from one's own self-incurred immaturity."

"The understanding has not to do with the content of presentations but with the form."

"Conscience is an inner court before which our thoughts are tried."

"Dreams are the gateway to imagination and creative thought."

"We cannot demonstrate the existence of God, but we can act as if it is true."

"Virtue is the habit of right action in the presence of temptation."

"The categorical imperative is the principle of morality itself."

"Time is not a substance but a form of our inner sense."

"Injustice anywhere is a threat to justice everywhere."

"The greatest respect we can show another is to listen fully to their words."

"War is a state of injustice, and peace is always the goal of nations."

"The sublime arises when reason confronts the infinite."

"To be honest in all dealings is the foundation of all virtue."

"Our reason tells us what our duty is; our will must follow."

"The only true education is the cultivation of the mind."

"Autonomy is the ground of human dignity."

"We live in an age of criticism, but not in a critical age."

"Every person has an intrinsic worth that cannot be diminished."

"The mind creates order where nature offers only chaos."

"Love is not a feeling but a commitment to another's welfare."

"History is the record of human freedom and its limitations."

"The search for truth is more valuable than the possession of it."

"Self-respect is the foundation of all moral action."

"We are born into a world we did not create and cannot fully understand."

"The noumenal world is beyond the reach of human knowledge."

"Courage is not the absence of fear but action despite it."

"A lie is a violation of the dignity of another person."