My card today, The Moon.
It has been said many times that things are not always as they seem, and in the influence of the Moon this axiom is particularly true. In the moonlight, things that are benevolent during the day can suddenly seem dangerous and malicious. The very term "moonlight" is misleading because the Moon does not emit light of its own, it simply reflects the light of the Sun. Some people even claim to see the face of a man on the Moon's cratered surface, though of course such a thing is impossible and only an illusion. A lot of people who look for that face in the Moon know it could not be there, but they look nonetheless.
This card is one of the few Major Arcana with important animal symbolism, and with no human figures in the majority of cases. The Rider-Waite card shows a wolf and a dog; two members of the same genus, but the first is wild and the second has been domesticated. Both of them are shown howling at the Moon, however, and if a human were present in this scene he would probably be affected somehow too. Regardless of your place in the hierarchy of society or of evolution, you are still susceptible to illusions and deception. The Moon shines the same light down on everyone, though what you see when that light reaches your eyes depends on who you are, not on what you see.