If you think you can do it, you can.
If you've got a talent, protect it.
Problems are not stop signs, they are guidelines.
The dog that trots about finds a bone.
Things do not happen. Things are made to happen.
By failing to prepare, you are preparing to fail.
Do not weep do not wax indignant. Understand.
What you do today can improve all your tomorrows.
Leap, and the net will appear.
Be gentle to all and stern with yourself.
Sound is the vocabulary of nature.
The world changes materially. Science makes advances in technology and understanding. But the world of humanity doesn't change.