I can, therefore I am.
If you're going through hell, keep going.
Know or listen to those who know.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
If you can dream it, you can do it.
Never complain and never explain.
Who seeks shall find.
Quality is not an act, it is a habit.
It's always too early to quit.
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.