The eye - which sees all objects reversed - retains the images for some time.
To enjoy - to love a thing for its own sake and for no other reason.
Those who, in debate, appeal to their qualifications, argue from memory, not from understanding.
No human investigation can claim to be scientific if it doesn't pass the test of mathematical proof.
The motive power is the cause of all life.
We know more about the movement of celestial bodies than about the soil underfoot.