Humbleness is of course good qualification, but the humbleness you will find in animal also, very humble. If you cut his throat, he will not tell anything. If we forget the aim of life and simply become humble like ass, is that very good qualification? The ass is very humble. You load upon it tons of loads, it will not protest. Very humble.
Srila Prabhupada, in conversation with professors, 19 Feb 1975