Queen Maya had an unusual dream one night. She had a dream about her prince before he was born. King Suddhodana wanted to know what it means… so he asked the fellow Brahmins what it meant. They said he could rule everything, but if he saw suffering, he would become a buddha.
When Siddhartha married, he spent more time traveling away from his palace. On his first trip, he saw an aging man. On his second he saw sickness. On his third he saw death.
Later on, on his fourth journey, He found an ascetic who told him that one could only be free of suffering if they give up desires, pleasures, and comforts.