Setting: four-year-old Spock, at his house on Vulcan, early evening.
Little Spock sat on the floor of his living room reading a book while his mother sat in her rocking chair knitting, his father in his office working at his computer. It was an average evening for their family. Suddenly, there was a crash of thunder and then the sound of rain pattering on the roof.
Storms were rare on Vulcan but when they did happen, they were harsh.
The thunder had startled Spock but he calmly went back to his reading. There was another crash of thunder and the little, Vulcan boy jumped nearly a mile. He knew it was illogical to be scared of thunder, he wanted to act like a full Vulcan, like his father, but he could not help it. He decided then and there that thunder itself was illogical and that he would ignore it.
Thunder crashed again and Spock let out an involuntary yelp of fright. His mother looked up from her knitting and saw her son's eyes wide with fear. She promptly set aside her knitting, stood, walked over to Spock, and scooped him up into her arms. She sat down in her rocking chair once more, but now with her son curled up against her like a frightened kitten.
The small boy squeezed his eyes shut and told his mother, "I do not like the thunder! It is illogical!"
"I know." was all she said and then started humming a lullaby.
Soon enough the future second in command of the starship Enterprise fell asleep in his mother's loving arms.