Science knows no country, because knowledge belongs to humanity.
Patience is nothing but an energy.
George Sand
The tree, when it is being cut down, sadly notes that the ax handle is made of wood.
Arabic proverb
Instead of painting things, they started painting ideas.
José Ortega and Gasset
A great man always receives help from other great men.
Kiko Sampaio
Whoever commits an injustice is always more unhappy than the person who is wronged.
Plato