We learn from the stories of his life that Muhammad (peace be upon him) was a very thoughtful boy. He took good care of his family's sheep, and played with the other children. But he also spent much time alone, wondering about the mysteries of nature. He thought about the people around him, how they lived and how they behaved. Even when he was a very little boy Halimah said that she often found him sitting by himself.
There are stories about how, even as a youngster, Muhammad (peace be upon him) believed in one God, the God of Ibrahim (peace be upon him). He never worshipped idols and refused to swear by them as other Arabs had come to do. These stories also tell us that Muhammad (peace be upon him) was troubled by the fact that people always seemed to be struggling for power and money, and that once rich and powerful, they became arrogant and showed no generosity to the poor and needy.
We do not know exactly what Muhammad (peace be upon him) looked like, but his cousin 'Ali ibn Ali Talib, has given us some idea. 'Ali said Muhammad (peace be upon him) was of medium height, broad-shouldered, and had curly hair and a thick beard. His walk conveyed strength and resolution: he walked softly but firmly, with large swift strides, and bent slightly forwards. Some say that the ground seemed to roll itself up for him, and his disciples had to work hard to keep up with even when the Prophet (peace be upon him) walked at a leisurely pace.
The Prophet's (peace be upon him) skin was tawny and his eyes shown light brown from under bushy eye-brows. The Prophet's (peace be upon him) eyes did not wander around, looking at this and that. They were usually downcast. But when he did look up at something he would look straight into it.
By the time he was 25 years old, Muhammad (peace be upon him) has a reputation for honesty. He was known among the Quraysh as the bravest and most gentlemanly person. He was a good neighbour, tolerant and always truthful. He always kept aloof from quarrels and quibbles, and never used foul language or abuse. 'Ali ibn Abi Talib once said, "all who came close to him grew to love him."
* With minor changes.
Source: Khan, Saniyasnain, Tell me about the Prophet Muhammad (peace be upon him), Goodword, New Delhi, India, 2003.