When Ikarus wanted to leave Crete he went to his workshop and fabricated some wings. His father took notice of what his son did and warned him of two things.
First, he was worried his son would get complacent and lazy. Wings would be oh so comfy, no more walking!
Second, he warned his son of hubris, meaning Ikarus would start to fancy his new invention and get into his ego because of it.
Ikarus did not listen. He did not take caution and ignored his fathers words. Instead of being watchful and humble, he flew too close to the sun, where the wax of his construction melted. Ikarus fell into the sea and drowned.