пожалуйста, исправьте ошибки в сочинении (английский)

Только по личному мнению.)
Science developed incredibly fast over the past two centuries. Scientific knowledge has grown to fantastic proportions.(grow to proportion - нельзя так сказать, но не знаю как исправлять..) A lot of things appeared due to the achievements of science. They have made our lives more comfortable. We should never forget great achievements of medical science. We quickly learned how to cure many diseases due to these achievements. (Discoveries scientists can not but rejoice - это чуть не понятно)
Science and education are very important in our lives. Science is difficult. Оnly courageous, persistent, perseverant person can work on science. This makes the work of scientists dramatic. Science is necessary. Research activities build up personality. They also develop memory and observation. A person can learn about the world through reason. He can also change the environment. Scientist creates new things
Science is the engine of progress. Not everyone understands this, and it's bad. Many people believe that studies are a waste of time and effort
Science is nice. Firstly, you get pleasure after overcoming difficulties. Secondly, the research activity gives meaning to everyday in life. Aesthetic pleasure, joy, all these feelings are filled by daily activities of the scientist. Scientists work on science with pleasure because all the negative feelings will disappear after we dive into our own research. So science helps sustain trouble. So I want to be a scientist because of these factors