The contemplation of celestial things will make a man both speak and think more sublimely and magnificently when he descends to human affairs.
When you wish to instruct, be brief; that men's [children's] minds take in quickly what you say, learn its lesson, and retain it faithfully. Every word that is unnecessary only pours over the side of a brimming mind.
A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation.
Art is born of the observation and investigation of nature.
There is no statement so absurd that no philosopher will make it.
The cultivation of the mind is a kind of food supplied for the soul of man.
Nulla (enim) res tantum ad dicendum proficit, quantum scriptio Nothing so much assists learning as writing down what we wish to remember.
No one sees what is before his feet: they scan the tracks of heaven.
Aristoteles quidem ait: 'Omnes ingeniosos melancholicos esse.' Aristotle says that all men of genius are melancholy.
Time obliterates the fictions of opinion and confirms the decisions of nature.
No one can speak well, unless he thoroughly understands his subject.
Not to know what has been transacted in former times is to be always a child. If no use is made of the labors of past ages, the world must remain always in the infancy of knowledge.
Philosophy is true mother of the arts [of science].
Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.
The Intellect engages us in the pursuit of Truth. The Passions impel us to Action.
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