"So act that your principle of action might safely be made a law for the whole world."

Kant, Immanuel on guidance   

"It is not God's will merely that we should be happy, but that we should make ourselves happy"

Kant, Immanuel on happiness
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"Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge."

Kant, Immanuel on instinct   

"There is, therefore, only one categorical imperative. It is: Act only according to that maxim by which you can at the same time will that it should become a universal law. "

Kant, Immanuel on uncategorised   

"Give me matter, and I will construct a world out of it!"

Kant, Immanuel on uncategorised   

"Ours is an age of criticism, to which everything must be subjected. The sacredness of religion, and the authority of legislation, are by many regarded as grounds for exemption from the examination by this tribunal, But, if they are exempted, and cannot lay claim to sincere respect, which reason accords only to that which has stood the test of a free and public examination."

Kant, Immanuel on criticism   

"Act as if the maxim of your action were to become through your will a general natural law"

Kant, Immanuel on action   

"Two things fill me with constantly increasing admiration and awe, the longer and more earnestly I reflect on them: the starry heavens without and the moral law within."

Kant, Immanuel on science   

"All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions, and therefore, with us, to sensibility, because in no other way can an object be given to us."

Kant, Immanuel on thoughts and thinking   

"Nothing is divine but what is agreeable to reason."

Kant, Immanuel on reason   

"Seek not the favor of the multitude; it is seldom got by honest and lawful means. But seek the testimony of few; and number not voices, but weigh them."

Kant, Immanuel on popularity   

"All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?"

Kant, Immanuel on philosophers and philosophy   

"Morality is not the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness."

Kant, Immanuel on morality
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"Live your life as though your every act were to become a universal law."

Kant, Immanuel on life
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"By a lie, a man...annihilates his dignity as a man."

Kant, Immanuel on lies and lying
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"Out of timber so crooked as that from which man is made nothing entirely straight can be carved."

Kant, Immanuel on humankind   

"From such crooked wood as that which man is made of, nothing straight can be fashioned."

Kant, Immanuel on honesty   

"What can I know? What ought I to do? What can I hope?"

Kant, Immanuel on hope   

"I wouldn't give a fig for simplicity this side of complexity but I'd give my right arm for simplicity on the other side of complexity."

Holmes, Oliver Wendell on