This also shows how people didn't want to search for their own understanding or educate themselves.And this is still often true today.People feel that if someone important and respected says that something is right, then it must be so.But even though Aristotle was a great manwho inspired many great scientists and philosophers after him, he was wrong at times.And Galilei too made mistakes.He is now known as the father of astronomybut he believed that the earth moved round the sun in a perfect circle. He was wrong.Therefore our understanding of the world around us is constantly growing and changing.In other words, we learn more every day and none of us can ever sit back and say, "We know it all".We need to thank the great men of the past for the wisdomto know that we don't know it all and probably never will,for that would mean a world without questions.So much of our knowledge and understanding of the world today is due to people like Bacon and Galilei,who were brave enough to step out from the shadows of conventional thoughtin order to find the kingdom of knowledge that today's civilisation is built upon.These men knew that knowledge and understanding are things to fight for;
