The great need to grasp principles had caused me to spend most of my time on fruitless persuits.
Intelligence is not the ability to store information, but to know where to find it.
Even a fool is wise after an event.
The strongest force in the universe is Compound Interest.
As to science, we may well define it for our purpose as "methodical thinking directed toward finding regulative connections between our sensual experiences".
It is just as important to make knowledge live and keep it alive as to solve specific problems.