After a storm comes a calm.
The wise does at once what the fool does at last.
Without hard work, nothing grows but weeds.
It's always too early to quit.
Be gentle to all and stern with yourself.
You never know what motivates you.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
Expect problems and eat them for breakfast.
What you do today can improve all your tomorrows.
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.