The secret of getting ahead is getting started.
Be kind whenever possible. It is always possible.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
Problems are not stop signs, they are guidelines.
You never know what motivates you.
If you think you can do it, you can.
The dog that trots about finds a bone.
Be gentle to all and stern with yourself.
Never complain and never explain.
The scientist is motivated primarily by curiosity and a desire for truth.
Science, almost from its beginnings, has been truly international in character. National prejudices disappear completely in the scientist's search for truth.