Do more than belong: participate. Do more than care: help. Do more than believe: practice. Do more than be fair: be kind. Do more than forgive: forget. Do more than dream: work.

Biologists must constantly keep in mind that what they see was evolved, not designed.

Obedience is the gateway through which knowledge enters the mind of the child.

„Remember that not getting what you want is sometimes a wonderful stroke of luck.”

I declare after all there is no enjoyment like reading!

Failure is not fatal, but failure to change might be.

Reason and free inquiry are the only effectual agents against error.