Know or listen to those who know.
Begin to be now what you will be hereafter.
Always desire to learn something useful.
Be kind whenever possible. It is always possible.
Things do not happen. Things are made to happen.
After a storm comes a calm.
If you're going through hell, keep going.
Be gentle to all and stern with yourself.
To know oneself, one should assert oneself.
Either you run the day or the day runs you.
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.