Our greatest ability as humans is not to change the world, but to change ourselves.
To find a truth that is true to me, to find an idea for which I am willing to live and die.
To act agreeably to our nature is virtue.
The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.
The mind is a biological problem-solving device.