"Angels can fly..."

Angels can fly because they take themselves lightly :-)

"With man this is impossible..."

Matthew 19:26 Jesus looked at them and said, "With man this is impossible, but with God all things are possible."

"No act of kindness..."

"No act of kindness, no matter how small, is ever wasted..." Aesop

"A relaxed attitude..."

"A relaxed attitude lengthens a man's life." Proverbs 14:30

"Dear children,..."

"Dear children, let us not love with words or tongue but with actions and in truth."
1 John 3:18