According to Berkeley, only minds and ideas exist. Therefore, sensible things are ideas.
Ideas only exist when they are perceived by some mind.
Therefore, sensible things only exist when they are perceived by some mind. These qualities may remind them of your mother, but no matter how much you resemble your mother, people do not immediately perceive your mother when they look at you. While lying in your bed late at night, you hear a loud whistle off in the distance. You immediately perceive the whistle, but you do not immediately perceive the train which caused the whistle. You conclude that a train is present by inferring it from the sound you hear.