Mark Twain
Of all the animals, man is the only one that is cruel. He is the only one that inflicts pain for the pleasure of doing it.
More quotes and aphorisms
Nobody challenges me. I challenge myself...The love of heaven makes one heavenly...I feel the need...I'm never satisfied, man. I'm Virgo...I was not a good student. I did not spend much time...A thousand years may scare form a state...