How did Siddhartha Gautama look for the cause of human suffering?

Answer 1

Siddhartha saw four sights: a sick man, a poor man, a beggar, and a corpse, he was filled with infinite sorrow for the suffering that humanity has to undergo.

After seeing these four things, Siddhartha then dedicated himself to finding a way to end human suffering. He abandoned his former way of life, including his wife and family, and dedicated himself to a life of extreme asceticism. So harsh was this way of life that he grew thin enough that he could feel his hands if he placed one on the small of his back and the other on his stomach. In this state of wretched concentration, in heroic but futile self-denial, he overheard a teacher speaking of music. If the strings on the instrument are set too tight, then the instrument will not play harmoniously. If the strings are set too loose, the instrument will not produce music. Only the middle way, not too tight and not too loose, will produce harmonious music. This chance conversation changed his life overnight. The goal was not to live a completely worldly life, nor was it to live a life in complete denial of the physical body, but to live in a Middle Way. The way out of suffering was through concentration, and since the mind was connected to the body, denying the body would hamper concentration, just as overindulgence would distract one from concentration.

With this insight, Siddhartha began a program of intense yogic meditation beneath a pipal tree in Benares. At the end of this program, in a single night, Siddhartha came to understand all his previous lives and the entirety of the cycle of birth and rebirth, or samsara, and most importantly, figured out how to end the cycle of infinite sorrow. At this point, Siddhartha became the Buddha, or "Awakened One." Instead, however, of passing out of this cycle himself, he returned to the world of humanity in order to teach his new insights and help free humanity of their suffering.

Answer 2

He tried fasting until he'd almost starved himself to death, then realized that wasn't the right way.

He was then attacked by Mara, god of the world, his daughters were raped & his worthiness was challenged. He touched the earth, asked it to witness his spiritual qualities, the earth shook and Mara & his armies ran away. Siddhartha then went into deep meditation, while in that meditation, he became enlightened to the cause of human suffering, and his past lives & future lives, how all beings passed into the higher & lower worlds, andfinally how craving, desire and ignorance are the cause of the process of re-birth. With this realisation he became a Buddha.

Answer 3

He was not looking. It was all around him. What he wanted to do was make sense of the darkness of suffering so that man can map a path for the spirit within him to lift up high enough to rise above it.

Not only did Buddha do it, so did all the other holy men/aka prophets. Its just too bad we pit their teachings against each other.

Answer 4

by meditating and sensing the real truth about the cause of life,,,,

Answer 5

by experiencing it himself