It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.
Being willing is not enough. We must do.
Realize that everything connects to everything else.
No human investigation can be called real science if it cannot be demonstrated mathematically.
The memory of benefits is a frail defence against ingratitude.
There is no higher or lower knowledge, but one only, flowing out of experimentation.