If you can dream it, you can do it.
Things do not happen. Things are made to happen.
Wherever you are - be all there.
Leap, and the net will appear.
I can, therefore I am.
The dog that trots about finds a bone.
Do not weep do not wax indignant. Understand.
If you're going through hell, keep going.
Be gentle to all and stern with yourself.
Always desire to learn something useful.
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.