My mother taught me three things: respect, knowledge, search for knowledge. It's an eternal journey.

One whose knowledge is confined to books and whose wealth is in the possession of others, can use neither his knowledge nor wealth when the need for them arises.

Abbreviators do harm to knowledge and to love.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

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

For, verily, great love springs from great knowledge of the beloved object, and if you little know it, you will be able to love it only little or not at all.