I only wish I had words to serve me to blame those who are fain to extol the worship of men more than that of the sun; for in the whole universe there is nowhere to be seen a body of greater magnitude and power than the sun. Its light gives light to all the celestial bodies which are distributed throughout the universe; and from it descends all vital force, for the heat that is in living beings comes from the soul [vital spark]; and there is no other [center] of heat and light in the universe.

–“In Praise of the Sun,”
Leonardo da Vinci

What is the biggest weakness of da Vinci’s argument?
a He incorrectly concludes that other stars do not have their own light.
b He relies on his own personal feelings and preferences.
c He suggests that the sun helps sustain life on Earth.
d He relies too much on others’ points of view.