Those who fear the facts will forever try to discredit the fact-finders.
Man will never be free until the last king is strangled with the entrails of the last priest.
We swallow greedily any lie that flatters us, but we sip only little by little at a truth we find bitter.
All things must be examined, debated, investigated without exception and without regard for anyone's feelings.
Happiest are the people who give most happiness to others.
From fanaticism to barbarism is only one step.
Watch out for the fellow who talks about putting things in order! Putting things in order always means getting other people under your control.
Superstition is more injurious to God than atheism.
No man has received from nature the right to command his fellow human beings.
Ignorance is less remote from the truth than prejudice.
Only passions, great passions, can elevate the soul to great things.
What a fine comedy this world would be if one did not play a part in it.
Skepticism is the first step on the road to philosophy.
We are far more liable to catch the vices than the virtues of our associates.
The philosopher has never killed any priests, whereas the priest has killed a great many philosophers.
In any country where talent and virtue produce no advancement, money will be the national god. Its inhabitants will either have to possess money or make others believe that they do. Wealth will be the highest virtue, poverty the greatest vice.
There are three principal means of acquiring knowledge... observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination.
Scepticism is the first step toward truth.
The Christian religion teaches us to imitate a God that is cruel, insidious, jealous, and implacable in his wrath.
In general, children, like men, and men, like children, prefer entertainment to education.
Does anyone really know where they're going to?
Instinct guides the animal better than the man. In the animal it is pure, in man it is led astray by his reason and intelligence.
Wandering in a vast forest at night, I have only a faint light to guide me. A stranger appears and says to me: 'My friend, you should blow out your candle in order to find your way more clearly.' This stranger is a theologian.
The most dangerous madmen are those created by religion, and people whose aim is to disrupt society always know how to make good use of them on occasion.
Disturbances in society are never more fearful than when those who are stirring up the trouble can use the pretext of religion to mask their true designs.
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