Simplicity is the soul of efficiency.

Austin Freeman

Haste has no blessing.

Swahili saying

If the problem can be solved why worry? If the problem cannot be solved then worrying will do you no good.

Shantideva

I am so clever that sometimes I don't understand a single word of what I am saying.

Oscar Wilde

Peace is costly but it is worth the expense.

African Proverb

La mejora continua es mejor que la perfección retrasada.

Mark Twain