Scepticism is the first step towards truth.
Interpretation
Scepticism encourages questioning and critical thinking, leading us to uncover deeper truths.
This quote by Denis Diderot emphasizes that questioning assumptions and having doubts is essential in the pursuit of truth. Scepticism acts as a catalyst that compels individuals to seek evidence, challenge beliefs, and ultimately arrive at a more profound understanding of reality.
In practice
During a philosophical discussion on the nature of reality, one could say this quote to emphasize the importance of questioning.
The arbitrary rule of a just and enlightened prince is always bad. His virtues are the most dangerous and the surest form of seduction: they lull a people imperceptibly into the habit of loving, respecting, and serving his successor, whoever that successor may be, no matter how wicked or stupid.
This root [the potato], no matter how much you prepare it, is tasteless and floury. It cannot pass for an agreeable food, but it supplies a food sufficiently abundant and sufficiently healthy for men who ask only to sustain themselves. The potato is criticized with reason for being windy, but what matters windiness for the vigorous organisms of peasants and laborers?
Do you see this egg? With this you can topple every theological theory, every church or temple in the world.
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.
In order to get as much fame as one's father one has to much more able than he.
All abstract sciences are nothing but the study of relations between signs.
Food is a weapon in austerity Britain. Hunger, the threat of and the reality of, is used to coerce and control.
Selfishness is not living your life as you wish to live it. Selfishness is wanting others to live their lives as you wish them to.
The door could not be heard slamming; they had probably left it open, as is the custom in homes where a great misfortune has occurred.
I am alone here in my own mind. There is no map and there is no road. It is one of a kind just as yours is.
There are some who, for varying reasons, would appease Red China. They are blind to history's clear lesson, for history teaches with unmistakable emphasis that appeasement but begets new and bloodier war. It points to no single instance where this end has justified that means, where appeasement has led to more than a sham peace. Like blackmail, it lays the basis for new and successively greater demands until, as in blackmail, violence becomes the only other alternative.
If you stare at a wall from four in the morning till nine at night and you do that for a week, you are getting pretty close to nothingness.
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