How many emperors and how many princes have lived and died and no record of them remains, and they only sought to gain dominions and riches in order that their fame might be ever-lasting.

Wherever good fortune enters, envy lays siege to the place and attacks it; and when it departs, sorrow and repentance remain behind.

Reprove your friend in secret and praise him openly.

Given the cause nature produces the effect in the briefest manner that it can employ.

Therefore, O students, study mathematics and do not build without foundations.

Make an effort to collect the good features from many beautiful faces.

Here is a thing which the more it is needed the more it is rejected: and this is advice, which is unwillingly heeded by those who most need it, that is to say, by the ignorant.