Olidin, I applaud your idealistic attitude. You will soon find that not all people are on that level of thinking. You inadvertantly identified the class of person against which a thick skin is required, the coward.
There are numerous people in the workforce, greater than 50% I daresay, from my own experience, that are afraid of change (therefore, growth and improvement) and must do what they can to cement their position in the firm. If one is not growing and improving, but must still retain their own good standing, then what is the only course of action? They must tear down and sabotage others. Sounds cynical, but give it a few years and you'll see exactly that.
Meanwhile, don't lose your professional attitude, cover yourself, make sure your work and your successes are well documented (so that you get credit for them)and just be aware that "smiling faces sometimes tell lies", to borrow from an old song.
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.