Every obstacle is destroyed through rigor.

The sun gives spirit and life to the plants and the earth nourishes them with moisture.

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.

Time stays long enough for anyone who will use it.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

Anyone who invokes authors in discussion is not using his intelligence but his memory.

Wisdom is the daughter of experience