Aristotle's metaphysics, roughly speaking, may be described as Plato diluted by common sense. He is difficult because Plato and common sense do not mix easily.

Physics is mathematical not because we know so much about the physical world, but because we know so little; it is only its mathematical properties that we can discover.

How about Pithecanthropus Erectus? Was it really he who ate the apple? Or was it Homo Pekiniensis?

When I was a child . . . Only virtue was prized, virtue at the expense of intellect, health, happiness, and every mundane good.

The qualities most needed are charity and tolerance, not some form of fanatical faith such as is offered to us by the various rampant isms

Patriots always talk of dying for their country and never of killing for their country.

Clergymen almost necessarily fail in two ways as teachers of morals. They condemn acts which do no harm and they condone acts which do great harm.