What you do today can improve all your tomorrows.
Problems are not stop signs, they are guidelines.
Always desire to learn something useful.
If you can dream it, you can do it.
Be kind whenever possible. It is always possible.
Go for it now. The future is promised to no one.
It's always too early to quit.
The secret of getting ahead is getting started.
I can, therefore I am.
Be gentle to all and stern with yourself.
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.