A poor craftsman blames his tools.

Oh, The Places You'll Go!

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are, and to make new things like them.

Dream as if you'll live forever. Live as if you'll die today.

Doubt that the sun doth move, doubt truth to be a liar, but never doubt I love.