If you think you can do it, you can.
Always desire to learn something useful.
Things do not happen. Things are made to happen.
The dog that trots about finds a bone.
What you do today can improve all your tomorrows.
I can, therefore I am.
Know or listen to those who know.
Be thine own palace, or the world's thy jail.
Wherever you are - be all there.
The wise does at once what the fool does at last.
The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.