Let proportion be found not only in numbers and measures, but also in sounds, weights, times, and positions, and what ever force there is.
Our life is made by the death of others.
The boundaries of bodies are the least of all things.
Do not reveal, if liberty is precious to you; my face is the prison of love.
Therefore, O students, study mathematics and do not build without foundations.
Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.