The price of greatness is responsibility.

The greatest pleasure I know is to do a good action by stealth, and to have it found out by accident.

Absence makes the heart grow fonder.

Learn wisdom from the ways of a seedling. A seedling which is never hardened off through stressful situations will never become a strong productive plant.

The greatest way to live with honour in this world is to be what we pretend to be.

Thousands of candles can be lit from a single, and the life of the candle will not be shortened. Happiness never decreases by being shared.

The important thing is this: to be able at any moment to sacrifice what we are for what we could become.

Bad times have a scientific value. These are occasions a good learner would not miss.