It is chastening to realise that human beings evolve so slowly.
The following quotation is from a 2nd century BC philosopher (Patanjali)
When you are inspired by some great purpose,
some extraordinary project, all your thoughts
break their bonds; your mind transcends
limitations, your consciousness expands in
every direction, and you find yourself in a new,
great and wonderful world. Dormant forces,
faculties and talents become alive, and you
discover yourself to be a greater person by far
than you ever dreamed yourself to be.