Kant, Immanuel

"Man must be educated for freedom and responsibility."

"That which is morally good must be based on reason, not sentiment."

"The starry heavens above awaken in us a sense of wonder and humility."

"Persistence in pursuit of knowledge is the mark of a noble mind."

"The concept of God is the highest expression of human reason."

"One cannot love without respecting the autonomy of the beloved."

"Peace among nations can only be achieved through rational agreement and law."

"Our duties to ourselves are the foundation of all other duties."

"Imagination is the powerful instrument for the creation of new ideas."

"The human being is the only creature bound by the moral law."

"Freedom is the ability to act according to one's own rational nature."

"Criticism is the only true friend of reason."

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

"To neglect one's own perfection is to fail in one's fundamental duty."

"History is the record of human attempts to achieve rational order."

"Beauty arises when we perceive purposiveness without a purpose."

"The war against intolerance begins in the human heart and mind."

"Knowledge without wisdom is like a ship without a rudder."

"True happiness comes from living according to virtue and reason."

"The dignity of humanity lies in its capacity for moral choice."

"One must never treat humanity merely as a means, but always as an end."

"The ability to think for oneself is the highest human achievement."

"Nature operates according to laws that can be discovered through reason."

"Fear is the enemy of clear thinking and moral action."

"The sublime fills us with a sense of our own greatness and limitations."

"Politics without morality is merely the exercise of power."

"Man's inhumanity to man is the greatest crime against reason."

"The contemplation of beauty is a pathway to understanding truth."

"One must cultivate one's talents as a duty to oneself and society."

"The only unconditional good is good will directed by reason."