Anyone who in discussion relies upon authority uses, not his understanding, but rather his memory.
Quote by Leonardo Da Vinci
Experience does not err. Only your judgments err by expecting from her what is not...
He who loves practice without theory is like the sailor who boards ship without a...
The greatest deception men suffer is from their own opinions.
I have learned from an early age to abjured the use of meat, and the...
Common Sense is that which judges the things given to it by other senses.
Beyond a doubt truth bears the same relation to falsehood as light to darkness.
While I thought that I was learning how to live, I have been learning how...
I have offended God and mankind because my work didn't reach the quality it should...
Just as courage imperils life, fear protects it.
All our knowledge has its origins in our perceptions.
Life well spent is long.
Human subtlety will never devise an invention more beautiful, more simple or more direct than...
As a well-spent day brings happy sleep, so a life well spent brings happy death.
The depth and strength of a human character are defined by its moral reserves. People...
He who is fixed to a star does not change his mind.
It's easier to resist at the beginning than at the end.
As every divided kingdom falls, so every mind divided between many studies confounds and saps...
Intellectual passion drives out sensuality
Passion and prejudice govern the world, only under the name of reason
Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry,...