Cantantes licet usque (minus via laedit) eamus.
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Let us go singing as far as we go: the road will be less tedious.
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Book IX, line 64Virgil
Aristoteles hominis animum comparavit tabulae rasae, cui nihil inscriptum sit, inscribi tamen omnia possint. ... Hoc interest, quod in tabula lineas ducere non licet, nisi quousque margo permittat: in mente usque et usque scribendo, et sculpendo, terminum nusquam invenies quia (ut ante monitum) interminabilis est.
John Amos Comenius
Minus times minus equals plus,
The reason for this we need not discuss.Wystan Hugh Auden
In the abstract world of American economists, equations run both ways; they believe that by changing the sign of a variable from plus to minus or from minus to plus or the price and quantity of x or y, the direction of historical movement can be reversed.
Robert Gilpin
Si parva licet componere magnis.
Virgil
Virgil
Virchow, Rudolf
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