Quality is not an act, it is a habit.
You never know what motivates you.
Only the educated are free.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
Wherever you are - be all there.
Be gentle to all and stern with yourself.
Be thine own palace, or the world's thy jail.
The dog that trots about finds a bone.
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.