If you think you can do it, you can.
Be gentle to all and stern with yourself.
If you're going through hell, keep going.
Do not weep do not wax indignant. Understand.
The most effective way to do it, is to do it.
Leap, and the net will appear.
If you can dream it, you can do it.
The secret of getting ahead is getting started.
Things do not happen. Things are made to happen.
Always desire to learn something useful.
When the first fossils began to be found in eastern Africa, in the late 1950s, I thought, what a wonderful marriage this was, biology and anthropology. I was around 16 years old when I made this particular choice of academic pursuit.