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Quotes About Rationality

Superstition is to religion what astrology is to astronomy the mad daughter of a wise mother. These daughters have too long dominated the earth.
~ Voltaire
My mother wasn't rational those last years; if she had been, she would have been horrified by her own behavior.
~ Lorna Luft
If you go in for argument take care of your temper. Your logic if you have any will take care of itself.
~ Joseph P. Farrell
If we were rational enough to judge what we are fed based on what we are fed, those in the business of selling us hope (i.e., public speakers, presidents, priests, etc.) wouldn't wear suits.
~ Mokokoma Mokhonoana
Whatsoever is contrary to nature is contrary to reason, and whatsoever is contrary to reason is absurd.
~ Baruch Spinoza
Individualism regards man-every man-as an independent, sovereign entity who possesses an inalienable right to his own life, a right derived from his nature as a rational being.
~ Ayn Rand
The man who has sufficient power over himself to wait until his nature has recovered its even balance is the truly wise man, but such beings are seldom met with.
~ Giacomo Casanova
The creative scientist studies nature with the rapt gaze of the lover, and is guided as often by aesthetics as by rational considerations in guessing how nature works.
~ Albert Einstein
Philosophy ought to be able to give an account of rationality that is not wholly detached from science's account of nature, even if it is not straightforwardly reducible to it.
~ Ray Brassier
It is in the nature of foolish reasonings to seem good to the foolish reasoner.
~ George Eliot
Nature was tough, it could be dangerous, but unlike Dr. Cable or shay, or peris-unlike people in general-it made sense. The problems it threw at you could be solved rationally.
~ Scott Westerfeld
How it chanced that a man who reasoned on his premises so ably, should assume his premises so foolishly, is one of the great mysteries of human nature.
~ Thomas B. Macaulay
The people naturally adhere most to doctrines which demand the least self-exertion and the least use of their own reason, and which can best accommodate their duties to their inclinations.
~ Immanuel Kant
Logic can be patient, for it is eternal.
~ Oliver Heaviside
No nation can truly develop unless fanaticism, primitive superstitions and metaphysical non-sense are eradicated.
~ Abhijit Naskar
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
~ Karl R. Popper
Everything must justify its existence before the judgment seat of Reason, or give up existence.
~ Friedrich Engels
The true function of philosophy is to educate us in the principles of reasoning and not to put an end to further reasoning by the introduction of fixed conclusions.
~ George Henry Lewes
Superstition sets the whole world in flames, but philosophy douses them.
~ Voltaire
Greek philosophy departs from the assumption that we can understand the world autonomously using our rational faculties. Islam is not saying this.
~ Tariq Ramadan
What is rational is actual and what is actual is rational
~ Georg Wilhelm Friedrich Hegel
I call him free who is led solely by reason.
~ Baruch Spinoza
Philosophy is common sense with big words.
~ James Madison
Atheism is a disease of the mind caused by eating underdone philosophy
~ Austin O'Malley