Related:

• Kindness is the beginning of cruelty. -- Muad'dib
• Fear is the main source of superstition, and one of the main sources of cruelty.
  To conquer fear is the beginning of wisdom, in the pursuit of truth as in the endeavour after a worthy manner of life....
• Kindness gives birth to kindness. -- Sophocle
• Mercy for the guilty is cruelty to the innocent.
• Kindness it is that brings forth kindness always. -- Sophocle
• There are no unimportant acts of kindness.
• A little kindness is all you need.
• All cruelty springs from weakness. -- Seneca